1. Who will be appointed to the chairmanship when Mr.
   Bell leaves?贝尔先生离职以后,谁会被派来担任主席?
2. They knew when to attack and when to retreat.
   他们知道什么时候进攻和什么时候撤退。
3. When be friended,remember it; when you be friend,forget it.
   他人助我，没齿不忘，我助他人，即刻忘记。
4. When alive filially fail, when dead upon the grave wail, what for ?
   生时不照顾，死后哭坟墓，有用吗？
5. These lines make far more sense when declaimed than when simply read out.
   这些台词用朗诵比起单纯的读效果要好得多。
6. When one individual mood low, how should when be in fast cronk condition, rescue.
   当一个人情绪低落,处于快要崩溃的状态时应该怎么挽救。
7. An overdraft results when a note discounted at a bank is not met when due.
   银行贴现的支票到期而未能支付就成为透支。
8. When braced, Jack naturally denied his identity.
   当遇到拦路查问时, 杰克自然地否认了他的身分。
9. He boohooed when he skinned his knee.
   当他的膝盖擦破时, 他大声地哭了起来。
10. They cap when they pass the president.
    他们经过院长面前时脱帽行礼。
11. When will the ship pass the channel?
    那轮船什么时候通过这海峡?
12. Space your words evenly when you write.
    写字的时候,字与字之间要均匀地分开。
13. When did the empire begin to wane?
    那个帝国何时开始衰落的?
14. Some ants eject formic acid when irritated.
    有些蚂蚁受到刺激时会排出蚁酸。
15. He gambles when he is in cash.
    他有钱时就赌博。
16. We were talking when he leaped in.
    我们正在谈话, 他跳了进来。
17. Typhoid fever sneaks in when sanitation fails.
    环境卫生搞不好,伤寒就会乘虚而入。
18. Beer froths when it is poured out.
    啤酒倒出来时会起泡沫。
19. I felt very humble when meeting her.
    遇到她时我觉得很卑微。
20. It invariably rains when he goes there.
    他去那里时天总是下雨。

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