文档介绍：Text A Black Holes
词汇精讲:
1 escape ,避免
A lion has escaped from its cage.
一头狮子从笼子里跑出来了
2 exert: ;尽力;运用;行使;施加,产生(影响等)
用法:exert pressure on …施加压力
She exerted herself all year to earn good 。
He's been exerting a lot of pressure on me to change my 。
Black holes exert very strong 。
3 explode ,突发
explosion [iksˈpləuʒən] n. 1 爆炸; 爆发 2 激增, 扩大 
explosive [iksˈpləusiv] adj. 1 爆炸的, 爆发的 2 极易引起争论的 n. 爆炸物, 炸药
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 , 崩溃
例句参考教材第34-35页的 word Study 2
5 shrink: (shrank, shrunk ) ;畏缩;;缩小
用法:The gross national product shrank one percent last %。
shrink+副词/介词短语:
That sweater shrank in the wash.
The girl shrank back in fear.
Shrink+名词:
This detergent won’t shrink wool 这种洗洁剂不会使毛料收缩。
6 boundary ,边界
We crossed the state boundary at midnight.
我们在午夜穿过了州界。
7 constant ,经常的;永恒的,始终如一 n..常数
He is in constant trouble with the 。
There are no constants at 。
对比同义词:
continual 时断时续的
It continually shrinks by the force of its own gravity
continuous 连续不间断的
The brain needs a continuous supply of blood.
大脑需要不断的供血。
constant强调不变,永恒
8 implication: ;涉及;卷入;含意;暗示
派生词:imply ,含意
用法:She seemed by implication to acknowledge that 。
The implication of your statement is that I was 。
9 launch: ,发动
The launch of the third man-made satellite turned to be a great 。
In the 1980's our country launched a number of 。
10 convincing : ;有说服力的;
派生词:convince ,使…相信
用法:She is very convincing .她很另人信服。
Convince ; convince 从句
We failed to convince him of his 。
Careful observation convinced them that it was 。
panion : ,同行,伴侣,同事
pany ,陪伴; pany ,陪伴
用法:He is a panion on the 。
表示"同事"的词:associ