32. worn-out adj. 破旧的，筋疲力尽的

[例句] You look worn-out after your long journey. 你走了很长的路，看上去风尘仆仆。
These are worn-out shoes. 这些是穿坏了的鞋子。
He came back worn-out. 他回来时筋疲力尽。

[记忆法] 合成法：这是由过去分词词组构成的形容词。分词构成的形容词还有：a candlelit table 一张点着蜡烛的桌子 a horse-drawn cart 一辆马车 a self-employed writer 专业作家 a three-lined avenue 三股车道的大路 a long-playing record 密纹唱片 a long-suffering parent 长期受苦的父母 a time-consuming job 费时的工作

33. wind-mill n. 风车

[例句] You can see wind-mills anywhere in Holland. 你在荷兰任何地方都能见到风车。

[记忆法]合成词：windbreak[ ]n. 防风林，挡风墙 windjammer[ ]n.大帆船 windpipe[ ]n.风笛 wind screen[ ]n.挡风玻璃 wind tunnel[ ]n.风洞

34. pasture n. 牧草，牧场
　v. 放牧；将（土地）用作牧场

[例句] This pasture can no longer carry such a large number of cattle and sheep.这块草地再也不能供养这么多牛羊了。
They pasture their animals in the village common. 他们在村上的公地放养牲口。

[记忆法] 派生法：pastoral[ ]adj.田园生活的；适于放牧的 n.田园诗，牧歌 pastorale[ ]n. 田园曲 pasturage[ ]n. 畜牧权；牧草

35．all in all:
（1）on the whole, everything considered总体来说，是非正式用法。

[例句] He makes some mistakes, but all in all he is a careful man. 他也犯一些错误，但总体的来说，他是一个认真的人。
The students' reaction to the new teacher's class was all in all satisfactory. 学生对于新老师上课的反应总的来看是令人满意的。

（2）altogether 总共

[例句] All in all, we have only two apples left. 我们总共只剩下两个苹果了。

（3）of great importance, interest, concern ect. 极重要的，最喜欢的，最关心的

[例句] The young couple are all in all to each other.这对年轻的夫妇互相珍视。

36. rural adj. 农村的 [反]urban [同] rustic。

[例句] Crops are grown in rural areas. 庄稼种在乡村地区。

[记忆法] 派生法：rusticate[ ]v. 过乡间生活 rustication[ ]n. 乡居

37. hilly adj. 多山的

[例句] The western region is hilly area in the country. 该国西部是多山地区。

[记忆法] 派生法 : 后缀-y的形容词性词尾，表示"满是……的，尽是……的，很多的" 如dirty[ ]肮脏的（即多灰尘的）hairy[ ]毛茸茸的，满是毛的 sleepy[ ]想睡的，昏昏欲睡的 rocky[ ]多岩石的

38. secure adj.安全的，可靠的，稳定的 [同]safe, reliable
v.（1）使安全，保卫 [同]safeguard （2）拴牢，束牢 [同]fasten （3）获得 [同]acquire, gain

[例句] I don't feel secure when I am alone in the house. 我一个人在家时感到不安全。
Is this ladder secure? 这梯子牢靠吗？

[记忆法] 派生法: security n. & adj. 安全, 安全的

39. drought n.干旱，旱灾 [反] flood 洪水，水灾

[例句] The crops died during the drought.久旱不雨，农作物枯死了。

40. crisp adj.脆的，易碎的 同brittle n.油炸马铃薯片

[例句] crisp pock松脆的燕麦饼；a crisp reply明确[爽快]的答复
crisp manners　活泼的举止

[辨析]:crisp, brittle, delicate：
crisp 干而硬的，干脆明快的
crisp pastry 酥脆的点心
a quick crisp reply 干脆的回答
brittle硬而易碎的，易损坏的；易怒的
a brittle friendship 脆弱的友谊
a brittle nature 易怒的天性
delicate 精美的；纤细，敏感的，需小心轻放；指人的弱不禁风。
Human body is a delicate machine. 人体是一部纤细的机器。
Don't touch that delicate subject. 不要涉及那个敏感的话题。

41. burn to a crisp: burn black or dry烤焦，烧焦

[例句] The ground was burnt to a crisp during that dry season.在那个干旱季节，大地都被烤焦了。
They burnt the papers to ashes. 他们把文件烧成了灰。

[考点]习惯用法: to是介词，表程度，又如：burn to ashes烧成灰

[辨析]：（1）burn down 焚毁，烧毁
The building burnt down and only ashes were left. 房子烧毁了，只剩下了一片灰烬。
（2）burn into烙上-印在心坎里。
The tendency to obey was burned into the slave.服从的倾向性被印在这个奴隶的心里。

42．here and there: scattered about; in various places 到处，零星分散

[例句] New buildings keep appearing here and there. 新的楼房不断在四处出现。
There are the parking cars here and there on the streets. 街上到处都是停放的汽车。
[辨析]：（1）neither here nor there 离题，不切题
I'd like to travel abroad too, but that's just neither here nor there: how can we afford it? 我也想出国旅游，但那离题太远了：我们怎么去得起呢？
（2）here and now目前
Here and now we'd better finish the work as soon as possible. 目前我们最好尽快完成工作。

43. rolling adj.绵延起伏的；旋转的; 滚动的；

[例句] A rolling stone gathers no moss. [谚]转石不生苔;
the rolling season　周而复始的季节　
the rolling smoke　滚滚浓烟
the rolling sea　波涛滚滚的大海　
a rolling plain　绵延起伏的平原
the rolling mountains绵延起伏的群山

44. haul v. 拖曳 [同]tug, tow, drag n. 拖，拉；（非正式）获得量（尤指偷窃物）

[例句] They hauled the boat up onto the shore. 他们用力把船拖上岸。
He hauled round to my way of thinking.他转变到跟我一样的想法了。
It was a long haul home, carrying all these bags of books up the hill.　背着这几口袋书藉上山回家,真是长途运输。
to haul up the fishing nets把渔网拉上来
They hauled away on the ropes.他们一直在用绳子拉。

[典型考题] They hauled the enemy's flag when they captured the city. [D]
A. off B. up C. away D. down

[试题解析] 译文：他们占领了那座城市之后，降下了敌人的旗子。 haul off俚语，举手（准备打）；haul up拉上来，押解到法庭；haul away 拖，拉； haul down 拉下来，haul down the flag作为固定短语时，指降旗。

45. stock n. 牲畜，存货，备料；, 家系, 血统，股票 [同] share v.储备 [同] store, keep

[例句] They decided to buy more stock for breeding. 他们决定再买些牲畜来饲养。
We have a large stock of tinned fruit. 我们有大批水果罐头的存货。
He comes of (a) good stock.　他出身世家。
His head is well stocked with ideas.　他的头脑里主意很多。
a man of Scottish stock一个苏格兰血统的男子；
the gold stock　黄金储备
stock market股票市场；
stock exchange　证券交易所

[记忆法]词义联想：stock-store v.储藏 n.商店 联想"店"之种种：store/shop（最通用）商店 grocery[ ]杂货店 department store百货商店 chain store连锁店 drug store药店 inn客店 由store构成的单词有：storehouse[ ]n.知识的宝库，见识广博的人 storekeeper[ ]n.店主 storeroom[ ]n.库房，储藏室 storage[ ]n.贮存；仓储费 restore[ ]v.归还，放回原处

46. distinctly adv. 清晰地 [同]clearly

[例句] I distinctly remember you promising to phone me!. 我可清楚地记得你是答应了要给我打电话的。
[记忆法] 派生法 ：distinct adj. 清晰的 distinction[ ]n.区别，分别 distinctive[ ]adj. 特殊的，特色的 distinguish[ ]v. 辨识，区别 distinguishable[ ]adj. 可认明的，清晰可见的 distinguished[ ]adj. 卓越的，杰出的

[考点] 习惯用法：be distinct from 不同
Those two ideas are quite distinct from each other.那两个观点十分不同。

47. graze v. 吃……的草，放牧，擦伤，擦破

[例句] They graze the sheep in the field. 他们在田野里放羊。
The car grazed the garage door. 汽车擦蹭了车房的门。
She grazed her knee. 她擦伤了膝盖。
to graze cattle放牛

[记忆法] 派生法：grazier[ ]n.畜牧业者 graziery[ ]n.畜牧业

48. freight n. 货物 [同]load

[例句]　This freight must be carefully handled when loading.装货时，这些货必须小心搬运。

[记忆法] 合成法：freight car = goods wagon货车 freight train = goods train载货火车 freight liner = liner train 运货火车

49. refinery n. 精炼厂，提炼厂

[例句] A new sugar refinery was built in the town. 该镇建造了一座新的制糖厂。

[记忆法] 派生法 ： refine v. 净化，提炼， refined[ ]adj. 提炼过去时；举止文雅的，感情脆弱的 ；refinement[ ]n.提炼；文雅 refiner[ ]n.提炼商；提炼机

50. boom v. 迅速发展，兴盛，广为宣传 [同] grow rapidly v.发低沉声，隆隆作响 n. 兴隆， 繁荣时期快速的成长或增加

[例句] Manufacturers try to boom their goods.　制造商们努力宣传他们的货物。
Business is booming these days: we shall all grow rich! 最近生意兴隆，我们都要发财了！
This boom in adult education, in turn, helps to raise the intellectual standard of the whole country.而成人教育热反过来又促进了整个国家文化水平的提高。

[典型考题] The ship out its warning. [B]
A. cried B. boomed C. sent D. bloomed

[试题解析] 译文：这艘轮船发出了警告。cry out（人）喊出；send out（从一中心点向四周）散出，发出；bloom开花，繁荣兴旺

51. grace n. 优雅，优美 [同]elegance 恩惠，恩赐 [同] blessing

[例句] She walks with grace. 她步态优雅。
Every lover sees a thousand graces in the beloved object.情人眼里出西施。

[记忆法] 派生法：graceful[ ]adj. 优美的，得体的 gracious[ ]adj. 宽厚的，谦和的，仁慈的 disgrace[ ]adj.使丢脸，玷污 disgraceful[ ]adj. 可耻的，不光彩的

[辨析]：gracious和graceful:
gracious（1）仁慈的，如：gracious God 仁慈的上帝
2）指大人物对小人物谦和的
3）修饰皇室成员 如：Her Gracious Majesty Queen Elizabeth 伊莉莎白女王陛下。
graceful 可修饰人或动物，指其动作"优美的"。如：a graceful young girl/young cat 优雅的少女/小猫。

[典型考题] In sports fields we can leam to win without pride and lose with . [B]
A. race B. grace C. face D. honor

[试题解析] 译文：在运动场上我们能够学到胜不骄，败不馁。 grace体面，文雅 race族，种族 honor名誉

52. antelope n. 羚羊

[例句] Antelopes are usually living in the western highland. 羚羊通常生活在西部丘陵地带。
[记忆法]词义联想：deer 鹿 cow牛 hippopotamus河马 giraffe长颈鹿 zebra斑马 rhinoceros犀牛 bison野牛 drom-edary单峰骆驼 Bactrian camel双峰骆驼 African buffalo非洲水牛 Indian elephant印度象

53. cut through

（1）go through directly穿过，穿透，刺穿

[例句] The sharp knife cut through his coat to the skin. 锋利的刀穿透了他的大衣，直抵其皮肤。
They cut through the woods and came to another village. 他们穿过树林，来到另一个山村。

（2）shorten (sth.); work faster with (sth.)缩短；更快地处理

[例句] Let's cut through the usual committee stage and get the plan approved faster.咱们缩短惯常的程序，尽快通过这项计划吧。

[辨析]：（1）cut off切开，割断；打断
She cut off a small piece of cake for me.她给我切了一小块蛋糕。
We were cut off in the middle of the interview.在面试中间，我们被打断了。
（2）cut out剪下；裁剪
She cut an important article out of the magazine.她从杂志上剪下一篇重要的文章。
Mother is good at cutting out a dress.妈妈擅长裁剪衣服。

54. abound v. （物产）丰富

[例句] Natural resources abound in our country.我国自然资源丰富。
He abounds in courage.他很有胆量。

[考点]习惯用法：abound in 表示"大量存在，富足"
The park abounds in wild animals. 那公园到处是野生动物。
The forest abounds in game. 森林里有许多猎物
Fish abound in that river. 那条河里多产鱼
abound with 则指"充满，多产"
This river abounds with fish.这条河里鱼很多。
Japan abounds with rain. 日本雨量充沛。
English literature abounds with good poems. 英国文学中，有许多优美的诗歌。

55. pine n. 松树，松木

[例句]These old Chinese furniture were made of pine. 这些中式旧家具是松木制成的。

[记忆法] 合成法：pine apple[ ]n.凤梨，菠萝 pine cone[ ]n. 松果 pine marten[ ]n. 黑褐貂 pine wood[ ]n.松林

56．cling v. 握住，粘附，抓住

[例句] The baby monkey clung to its mother. 小猴子紧紧偎着它妈妈。
cling to the hope坚信
[记忆法] cling- cl-与"握住，粘附，抓住"有关 climb[ ]v. & n. 爬，攀登 climber[ ]n. 攀爬的人或物 clinch[ ]v. 钉牢，紧握 clip[ ]v. 用夹子夹牢 clutch[ ]v.抓牢，抓紧 clasp[ ]v. 紧握，紧抱

[典型考题] At the party we found that shy girl her mother all the time. [D]
A. depending on B. coinciding with
C. adhering to D. clinging to

[试题解析] 译文：我们发现晚会上那位腼腆的女孩一直与她妈妈形影不离。
depend on sb. 一般指经济上依靠；coincide with与……相符；adhere to粘住，遵守；cling to sb. 紧靠着，指感情上依靠

57. cling to, keep a firm hold on, stay close, stick to紧紧抓住；紧守，墨守，to是介词

[例句]：He clings to the rope in order to survive the flood.他紧紧抓住绳子，想从洪水中幸存。
The manager is very stubborn and he always clings to his own view.这位经理非常固执，总是坚持己见。

[辨析] stick to: refuse to leave or change坚持，固守
You can depend on him since he is a man sticking to his promise.由于他是一个坚守诺言的人，你可以依赖他。

58. torrent n.激流 [同]rushing stream

[例句]　A torrent of water swept down the valley. 急流自山谷奔腾而下

[记忆法]词义联想：torrential[ ]adj.滂沱 联想：current[ ]n. 水流

59. be/go on the/a rampage: go about in an excited, mad and violent manner横冲直撞，暴跳如雷。

[例句]The frightened horse went on the rampage and wounded a lot of people. 受惊的马横冲直撞，伤了很多人。
He was on the rampage when he got to know, that his best friend had deceived him.当他得知他最好的朋欺骗了他时，暴跳如雷。

60. terrain n. 地带，地形

[例句] It's a difficult terrain for tanks.　这是坦克作战的困难地形。
He is a guide who knows this terrain well. 他是一个非常熟悉这一区域的向导。

[记忆法] 派生法：terra- (terre-) 与"土地"有关。如 terrace[ ]n.梯形地的一层；平台，阳台 terracotta[ ]n.赤土，赤土陶器 terrafirma[ ]n. 大地，陆地 terrapin[ ]n.泥龟 terrestrial[ ]adj. 地球的，陆地上的

61. picnic n. 野餐，郊游

[例句]They went on/for a picnic with their friends. 他们和朋友去野餐。
We had a picnic by the sea. 我们在海边搞了一次野餐。
[考点]词形变化：过去分词picnicked, 现在分词 picnicking picnicker[ ]n.野餐者

62. roar n.咆哮，轰鸣；v. 吼叫，咆哮，轰鸣 [同]bellow, rumble

[例句] The lion gave a loud roar. 这只狮子大吼一声。
The crowd roared their approval. 群众高声喊叫表示同意。
roar out an order 大声发出命令
roar with laughter [pain] 哄堂大笑[痛苦地吼叫]
You need not roar. 你不必那么大声嚷嚷。

[记忆法] 派生法 : roaring[ ]n.咆哮，吼声 roaring forties（北纬40-50度的） 大西洋暴风雨带 roaring success非常成功

[考点]习惯用法：roar down大声叫嚷以压制某人的讲话声 roar for高喊要求

63. by chance: unintentionally, by accident 偶然地，意外地

[例句] I met my best friend by chance in Beijing.我在北京偶然遇到了我最好的朋友。
He got the first prize by chance. 他意外地获得了一等奖。

64. at one time: formerly 从前，曾经

[例句] At one time, there was just one 3-floor building in this area; but now even skyscrapers are not rare. 这个地区曾经只有一座3层高的楼，但现在即使是摩天大楼亦不少见。

[辨析]（1）at times 有时，等于sometimes。
His is allowed to watch TV just at times. 他只是有时才被允许看电视。
（2）at the time那时候
I told you at the time that I wanted to go abroad. 那时我告诉你说我想出国。

65. halfway adj. & adv.中间的，中间地；不完全的

[例句] You can't go halfway when you're painting the walls. Otherwise, you'll probably make a mess of it.　你油漆墙壁时不能半途而废,否则会把事情弄糟的。
Never travel halfway .决不要中途止步。
I had halfway decided to accept their conditions at that time.　当时我已差不多决定要接受他们的条件了。

[记忆法] 合成法: Half可与许多词结合，构成新的单词，表"一半"之意。如：half-hardy[ ]adj.（植物）耐寒但不耐冰冻的 half-hearted[ ]adj. 不热心的；半心半意的 half-time半场（球赛） half-holiday 半日休假 half-length adj.上半身的 half-term期中假

66. continental adj.大陆的，大陆性的

[例句]continental climate大陆性气候

[记忆法] 派生法: -al后缀表示"关于……的"，"有……之性质的"。如：political[ ]政治的 directional[ ]方向的 environmental[ ]环境的 social[ ]社会的 corporal[ ]肉体的，身体的

67. level v.使成水平，弄平 [同]flatten, smooth n.水平线，标准，层面；层次 adj.水平的，同等高度的

[例句] We leveled the piece of ground so that we could play football on it. 我们平整了这块地以便在上面踢足球。
The garden is arranged on two levels. 花园分两层。
This government difficulty is being considered at ministerial level.部长一级正在考虑政府这一难题。
We need a level piece of ground to play football on. 我们踢足球需要一块平地。
I was level with my friend in the examination; we got the same number of marks. 我和我的朋友考试成绩一样，我们得了同样的分数。

[记忆法] 派生法：lev有"举"的意思，演化出下列各词：lever[ ]n.杠杆，杆 leverage[ ]n. 杠杆作用 elevate[ ]v. 抬高，举起 elevation[ ]n. 提高，高升 elevator[ ]n.电梯，升降机

[考点] 习惯用法：be level with与……同高（或齐平）
The child's head is level with his father's knee.这孩子的头与他父亲的膝盖齐平。

[典型考题] The plane before landing at the airport. [D]
A. leveled down B. leveled to
C. leveled at D. leveled off

[试题解析] 译文：飞机在机场降落前会先水平飞行。level off弄平，平飞；level down平整；level…to (against) 夷平，毁坏；level at把……对准

68. level off/out: move horizontally (after climbing); remain steady (after a rise) (爬高后)水平移动；(上升后)达到平稳。

[例句] The population is leveling off in China as a result of family planning. 由于计划生育，中国的人口增长正趋于平稳。
After a long time's inflation, the price of most of goods leveled off. 经过长时间的通货膨胀，大多数商品的价格稳定下来。

[辨析] level at 指责，控诉
A serious charge was leveled at the minister. 部长被人指控一项严重罪名。
level with 对……说实话，不隐瞒实情
Finally, he leveled with his teacher. 终于他对老师说了实话。

69．All at once突然

[例句] All at once, a bird flew out of the bushes. 树丛里突然飞出一只鸟。

[考点]注意区别下列一组有关once的短语：
all at once 突然
at once 立即，马上
for once 惟一的例外
for this once 就这一次（口语用法）
once in a while偶尔
once for all 只此一次
once upon a time 从前某个时候

70. stretch v. 伸延；拉长，展开 [同]extend lengthen
n.伸展；一段时间/路程

[例句] She stretched the material. 她撑拉这种材料。
In some tropical regions small boats used to be made of skins stretched over a wooden frame.　过去有些热带地区小船是用兽皮绷在一个木头框子上造成的。
He stretched his legs in front of him. 他往前伸腿。
I stretched out my hand towards the book. 我把手伸向这本书。
There's not much stretch in this collar. 这个领子没有多少伸缩性。

[考点]习惯用语：stretch oneself伸直，伸懒腰
After finishing her homework, she stood up and stretched herself.做完作业后她站起来，伸伸懒腰。

[典型考题] The English teacher laid particular the need of reading aloud. [A]
A. stress on B. importance C. stress to D. strain on

[试题解析] 译文：英语师特别强调了大声朗读的重要性。stress强调、压力，后面用介词on。

71. stretch out: extend; prolong 延伸，延续，伸出

[例句]If you stretch out your hand, you can feel the rain. 如果你伸出手去，你能感觉到在下雨。
The mountains seem to stretch out forever. 群山似乎永远延伸下去。

72. procession n. 行列，队伍

[例句] They watched the procession go past. 他们观看游行队伍经过。
a funeral procession送葬行列　
form a procession　排成行列
walking in procession across the streets　列队过马路
parading procession　游行队伍

[记忆法] 派生法：proceed[ ]v.前进 如：proceed to the next item继续进行下一个项目 procedure[ ]n. 程序，手续 procedural[ ]adj.手续的，程序的 proceeding[ ]n.动作之过程，进行 process[ ]n.进行，过程

[考点]习惯用法： proceed to do 继续做
As soon as he came in he proceeded to tell us all his troubles. 他一进来就把他所有的烦恼都告诉了我们。
proceed with sth. 继续进行
Tell us your name and then proceed with your story.把名字告诉我们，然后开始讲你的故事吧。
in (the) process of 在……的过程中
The firm is now in the process of moving the machines to new factory. 这公司现正把机器移至新工厂。

73. massive adj. 巨大的，大规模的 [同]vast, tremendous

[例句]：We must make massive efforts to improve things. 我们必须作出巨大努力来改进情况。

[记忆法] 派生法:后缀-ive加在动词之后，表有做某事或引起某动作倾向的形容词。如：offensive[ ]冒犯的 explosive[ ]会爆炸的 active[ ]积极的

74. gasp n. 喘气；at one's last gasp. 奄奄一息 v.喘气，气喘吁吁地说 [同]pant

[例句] She gave a gasp of surprise.她惊讶得屏住了气。
I gasped as I jumped into the cold river. 当我跳进冰冷的河里时，简直透不过气来。
I came out of the water and gasped for breath.　我钻出水面急切地喘了口气 。

[考点]习惯用语：gasp out气喘吁吁地说
He gasped out the message.他喘着气说出了这个消息。
gasp in (with) surprise at… 因……而惊讶不已
I gasped in surprise at the unexpected news.我因这个出人意料的消息而惊讶不已。

75. in truth: truly; really; in fact 事实上，的确，实际上

[例句] In truth, he played an important role in the whole affair. 事实上，他在整个事件中扮演了一个重要的角色。
The story tells us that the ugly bear was in truth a handsome prince. 故事讲的是那只丑陋的熊实际上是一个漂亮的王子。

76. remote adj. 遥远的，偏僻的 [同]distant, far, lonely remotely adv.遥远地，极小地，很少地，轻微地（常否定）

[例句] This question is remote from the subject.　这个问题与本题不太相干。
a remote village　穷乡僻壤
the remote future遥远的未来
be remote and cold in one's manner　态度冷漠　
a remote possibility　极小的可能性

77. initial adj.最初的，开始的 [同]first, beginning n.（pl.）首字母

[例句] The initial talks were the base of the later agreement.最初的会谈是后来达成协议的基础。

[记忆法] 派生法：initially[ ]adv.最初，开始 initiate[ ]v. 创始，发起 initiate[ ]n.有专门知识的人；被传授入门知识的人 initiation[ ]n.创始，加入；传授秘诀 initiative[ ]n.主动，率先 如：take the initiative.

78. impact n.影响，冲击 [同]effect, collision

[例句]　The impact of a good teacher might be enormous.一位好老师的影响力可能是极为巨大的

[考点] 习惯用法：impact on对……的冲击（或影响）
Father's words had a great impact on me.父亲的话对我有很大的冲击。

[典型考题] The computer has made a great on modern life. [B]
A. impression B. impact C. impatience D. hitting

[试题解析] 译文：电脑对现代生活带来极大的冲击。impression印记，印象；impatience不耐烦；hitting击中

79. have in mind: be considering, intend 考虑，打算，记着某事

[例句]I'll tell you what I have in mind later. 我以后会告诉你我想些什么。
Since he had his study in mind, he could not focus on the film. 由于他考虑着他的学习，所以不能集中精力看电影。

[辨析] bear/keep (sth.) in mind 牢记（某事）
keep it in mind that you should buy some bread home. 记着你要买些面包回家。
have sth. /sb. on one's mind 为（某人/某事）操心，挂虑
The mother had her son's safety on her mind all the time. 母亲一直为儿子的安全操心。