1. dumb a. [dʌm] 哑的;沉默的
例句:She's been dumb from birth.
她生来就是哑巴。
例句:We were struck dumb with horror and grief.
惊恐和忧伤使我们哑口无言。
2. dump vt. [dʌmp] 倾卸,倾倒
例句:Some people just dump their rubbish into the river.
有些人径直往河里倒垃圾。
3. deaf a. [def] 聋的;不愿听的
例句:He is always deaf to his teacher's advice.
他总是对他老师的忠告充耳不闻。
4. decorate vt. ['dekəreɪt]装饰,装璜
例句:We decorated the house for Christmas.
我们装饰房屋过圣诞节。
例句:The house was empty and easy to decorate.
房子是空的,装修起来很容易。
5. principal a. ['prɪnsəp(ə)l] 最重要的 n. 负责人,校长
例句:My principal concern is my family's welfare.
我至为关心的是我一家的幸福。
例句:When I came into the office, the principal rose to welcome me.
当我走进办公室时,校长起身欢迎我。
6. principle n. ['prɪnsɪp(ə)l] 原则,原理
例句:Archimedes, a great physicist, discovered the principle of floating bodies.
阿基米德,一位伟大的物理学家,发现了浮体原理。
例句:We adhere to the principle that everyone should be treated fairly.
我们坚持人人都应该被平等对待这一原则。
7. prior a. ['praɪə] 优先的,在前的
词义辨析:previous, preceding, prior
previous: 指时间上、顺序上较早的,或指正在谈论的某事的前一个。
preceding: 特指时间和地位上紧接在前。
例句:He feels a prior obligation to his job as a journalist.
他觉得要优先为他的新闻记者的工作尽职。
例句:The offer is subject to prior sale.
该报盘以未售出前为准。
8. priority n. ['praɪə] 优先,重点
例句:Efficiency does not always have priority.
效率不一定总是优先。
例句:You must decide what your priorities are.
你应该分清轻重缓急。
9. prohibit vt. [prə(ʊ)'hɪbɪt] 禁止,不准
例句:Smoking is prohibited here.
这里禁止吸烟。
10. remarkable a. [rɪ'mɑːkəb(ə)l] 值得注意的,异常的,非凡的
例句:These trees attain to remarkable height.
这些树木长到异常的高度。
例句:He showed remarkable courage when he faced the danger.
他在面对危险的时候表现出非凡的勇气。
11. remedy n. /vt. ['remɪdɪ]补救,医治,治疗
例句:Warmth is the best remedy for colds.
热疗是治感冒的最好方法。
例句:The mistake is beyond remedy.
这个错误是无法补救的。
例句:Aspirin may remedy a headache.
阿斯匹林可治头痛。
12. repetition n. [repɪ'tɪʃ(ə)n] 重复,反复
例句:We must avoid the repetition of a mistake.
我们必须避免犯同样的错误。
13. vain a. [veɪn] 徒劳的,无效的
例句:All his father's exhortations were in vain.
他父亲的一切劝告都无效。
例句:We tried in vain to make him change his mind.
我们想使他改变主意,结果是白费心机。
14. undertake vt. [ʌndə'teɪk] 承担,着手做;同意,答应
例句:Whatever I may undertake in the coming years, I don't need your help.
未来无论我从事什么,我都不需要你的帮助。
例句:He undertook to finish the job by Friday.
他答应星期五之前完成这项工作。
15. unique a. [juː'niːk]唯一的,独特的
例句:He occupies a unique place in English literature.
他在英国文学中占有独特的地位。
16. obstacle n.['ɒbstək(ə)l] 障碍(物),妨碍
例句:Lack of education is an obstacle of success.
缺乏教育是成功的障碍。
17. odd a.[ɒd] 奇特的,古怪的;奇数的
例句:It's very odd that she didn't reply to our letter.
她没有回我们的信是件很奇怪的事。
例句:1,3,,5 and 7 are odd numbers.
1,3, 5 和7 是奇数。
18. omit vt.[ə(ʊ)'mɪt] 省略
例句:In writing telegrams omit superfluous words.
写电报稿要省去不必要的文字。
19. opponent n. [ə'pəʊnənt] 敌手,对手
例句:He was assailed by his political opponent.
他遭到政敌的攻击。
例句:He is slashing wildly at his opponent with a sword.
他正用剑疯狂地朝对手乱砍。
20. opportunity n. [ɒpə'tjuːnɪtɪ] 机会,时机
例句:You must grasp this opportunity.
你必须抓住机会。
例句:The opportunity has not yet arrived.
时机尚未成熟。
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