be civil to 對…有禮貌，對…謙恭

be clear about 對…明白，對…明確

clear off (云霧等)消散

keep clear of 不接觸;避開

around the clock 晝夜不斷地，全天地

close down 停止播送;控制

close in 包圍;(晝,夜)逐漸變短

close one's ears to 掩耳不聽

close over 淹沒;封蓋;遮蔽

close up (傷口)愈合;停業(yè)

close with 靠近，逼近;接受

combine with 使結(jié)合;使聯(lián)合起來

come after 跟在…后面;跟蹤

come alive 活躍起來;覺悟起來

come between 在…中間;離間

come down on 申斥;懲罰;襲擊

come in for 接受(份兒、遺產(chǎn)等)

come out with 發(fā)表，提出;公布

come over 過來;從遠方來

come to one's mind 忽然想起

come under 編入，歸入(某一項目)

when it comes to 一談到;就…而論

be comparable to 比得上…

be comparable with 與…可比較的

compare with 與…相比較

complain of 抱怨;訴苦;抗議

be composed of 由…組成

connect with 連接;相通，銜接

be considerate of 體諒…，替…著想