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. concentrate on (or upon)集中，专心