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1·This door should only be used in an emergency.

这道门只能在紧急情况下使用。《牛津词典》

2·The acid test of a good driver is whether he or she remains calm in an emergency.

在紧急情况下能否保持冷静是对一个好司机的严峻考验。《牛津词典》

3·You kept your head in an emergency.

在紧急情况下你要保持头脑清醒。

4·It is of great importance to keep calm in an emergency.

在紧急情况下保持冷静是至关重要的。

5·You say hello, use small talk if you see them in the yard, you discuss problems as they arise and you help each other in an emergency.

你说“你好”，如果你看到他们在院子里可以闲聊，当他们出现时你们可以讨论问题，在紧急情况下你们可以互相帮助。

6·But the fact that 4 in 10 Americans can't come up with $400 in an emergency is a commonly cited statistic for good reason: economic instability stretches across race, gender, and geography.

但是，每10个美国人中就有4个在紧急情况下拿不出400美元，这个数据常被引用，理由也很充分，即经济不稳定跨越了种族、性别和地域因素。

7·It is important to keep calm in an emergency.

情况紧急的时候，保持镇静是重要的。《牛津词典》

8·She explained to them what to do in an emergency.

她向他们说明了紧急情况下应采取的行动。《牛津词典》

9·The engines shut off automatically in an emergency.

遇到紧急情况发动机便自动停止工作。《牛津词典》

10·The crew demonstrated to passengers what to do in an emergency.

机组人员向乘客演示了遇到紧急状况时该怎么做。