1. keep company with(=be friendly and go out together)和 要好
2. compare with 把 与 比较
3. compare to 把 比作
4. by comparison比较起来
5. in comparison with(=in contrast to)和 比起来
6. compensate for(=give sth. to make up for)补偿，赔偿，弥补compensate sb. for sth.赔偿，弥补
7. complain of(or about)抱怨;诉苦;控告;complain about抱怨某人或事情;complain to sb. about sth.(or sb.)向某人抱怨 ;complain(抱怨);complement(补充);compliment(恭维)
8. comply with(=act in accordance with a demand，order，rule etc.)遵守，依从
9. conceive of(think of，imagine，consider)想象，设想
10. in common(和 )有共同之处，共用be common to sb.是与某人所共有的'
11. charge for因 索取(费用)，charge sb. with sth.控告某人犯有...
12. round the clock(=all day and all night，usually without stopping)昼夜不停地
13. comment on评论
14. commit oneself to使自己承担 commit sb. to prison把某人送进监狱;commit ones idea to writing把某人的想法写下来;commit a matter to a committee把某事交给委员会讨论
15. concentrate on(or upon)集中，专心
