1. convey v. 传达
A vibrating membrane in the ear helps to convey sounds to the brain.
耳膜的振动帮助声音传送到大脑。
2. collapse v. 坍塌
The roof collapsed under the weight of snow.
房顶在雪的重压下突然坍塌下来。
3.crude a. 未加工的
crude oil 原油
This crude glycerin is from pure virgin vegetable oil.
这是未加工的甘油，来自纯净原始的植物油。
4. concession n. 让步
They interpreted her silence as concession.
他们把她的沉默解读为让步。
5. defect n. 缺陷
The new car had to be withdrawn from the market because of a mechanical defect.
那种新汽车因有机械缺陷只好撤出市场。
6. deliberate a. 故意的=on purpose
It had more the appearance of a deliberate crime than an accident.
那很像是蓄意的罪行，而不像是意外的事故。
7. depress v. 使沮丧
The thought of having to take the exam again depressed me.
想到还需重新考试，我就感到沮丧。
8. detect v. 发现
词义辨析：discover, find, detect, ascertain
discover: 指发现本来已经存在，后被人认识的事物、真理或情况
find: 普通用词，可指偶然发现，也可指经过寻找后得到或重新获得已失去的东西。强调动作的结果
detect: 正式用词，强调经过周密观察或研究而有所获得和发现，尤指发现有意隐藏之物
ascertain: 较正式用词，指有意搜寻与发现
If you read between the lines, you can detect his contrived explanation.
在字里行间，你可以看出他牵强的解释。
9. descend v. 下降
词义辨析：descend, drop, fall, sink
descend: 通常指沿斜线或斜坡下降
drop: 指物体从一定高度落下
fall: 与drop同义，指突然或猛烈地降落，但fall也可指任何下落，同高度或形式无关
sink: 指在空气或水中垂直下降、下沉
The sun descended behind the hills.
太阳下山了。
10. dim a. 昏暗的
Most comets are so dim that they can not be seen by the naked eye.
彗星很暗淡，肉眼看不见。
1. disguise v. 化装
She disguised herself as a man, but she couldn't disguise her voice.
她把自己乔装成一个男子，但她改变不了自己的声音。
2. dispose of v. 去掉; 处理
词义辨析：deal with, cope with, dispose of, manage, handle
deal with: 既可指处理具体事情，也可指处理或解决具有抽象意义的问题。
cope with: 指成功地处理或对付更为重大，更为严重的问题或事物。
dispose of: 与deal with同义，普通用法。
manage: 指处理日常事务与工作，也可指经营管理。
handle: 从原义“手柄”，转引申为作“处理”解时，其内涵是管理和操纵。
I want to dispose of these old books.
我想处理掉这些旧书。
3. distress n. /v. 痛苦
I pray that you will have pity on my distress.
我请求你可怜可怜我的不幸遭遇。
Don't distress yourself about it.
别为那件事苦恼了。
4. diverse a. 多样的
The program deals with subjects as diverse as pop music and Beijing Opera.
节目涉及从流行音乐到京剧这样形形色色的题材。
5. document v. 证明
He can document his theory with facts.
他能为自己的理论提供事实证明。
6. dominate v. 支配
He desires to dominate over others.
他很想支配别人。
7. drain v. 排走;耗尽
They drain the swamp and turn it into fertile land.
他们排干沼泽地的水,将它变成了肥沃的土地。
She felt drained of energy.
她感到精疲力竭。
8. discard v. 丢弃
词义辨析：discard, scrap, shed
discard: 指把具体的东西抛掉不要，着重扔、丢的动作。
scrap: 指抛弃过时，不再有用的东西。
shed: 指毛发、皮肤、叶等经过某种自然的过程而脱落。
Don’t discard the drink cans carelessly.
不要随意丢弃饮料罐。
9. exaggerate v. 夸大
The seriousness of the situation has been much exaggerated by the press.
形势的严重性被报纸夸大了。
10. exploit v. 利用
You must exploit all your spare time to learn English.
你必须利用一切空闲时间来学习英语。