2019年云南自考网《英语（二）》：词汇精讲

1 escape v.逃跑，避免

A lion has escaped from its cage.

一头狮子从笼子里跑出来了

2 exert： vt.用尽;尽力;运用;行使;施加，产生(影响等)

用法：exert pressure on sb.给…施加压力

She exerted herself all year to earn good marks.她整年努力以期获得好分数。

He's been exerting a lot of pressure on me to change my mind.他一直在施加种种压力要我改变主意。

Black holes exert very strong gravity.黑洞产生很强的引力。

3 explode v.爆炸，突发

xplosion n.

explosive a.

A bomb exploded at one of London's busiest railway station this morning.

今天上午一颗炸弹在伦敦最繁忙的火车站爆炸了。

4 collapse v.n.倒塌， 崩溃

例句 参考教材第34-35页的 word Study 2

5 shrink： (shrank， shrunk ) v.退缩;畏缩;n.收缩;缩小

用法： The gross national product shrank one percent last year.去年国民生产总值减少了1%.

Washing wool in hot water will shrink it .在热水中洗羊毛会使它缩水。

We will never shrink back before difficulties .我们在困难面前决不退缩。

6 boundary n.分界线，边界

We crossed the state boundary at midnight.

我们在午夜穿过了州界。

7 constant adj.不断的，经常的;永恒的，始终如一 n……常数

He is in constant trouble with the police.他总是不断和警察惹麻烦。

There are no constants at all.根本没有不变的事物。

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