101.by chance(=accidentally，by accident)偶然
102.for a change 换换环境(花样等)
103.charge sb. with… 控告某人犯有…
104.in charge of(=responsible for)负责(某事);in the charge of… 由…管
105.take charge of(=to be or become responsible for)负责管理(照顾)
106.charge…for 因…索取(费用);charge sb. with sth. 控告某人犯有…
107. round the clock(=all day and all night，usually without stopping)昼夜不停地
108. comment on 评 论
109. commit oneself to 使自己承担…;commit sb. to prison 把某人送进监狱;commit one’s 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
110. in common(和…)有共同之处，共用;Be common to sb. 是与某人所共有的
111.keep company with(=be friendly and go out together)和…要好
112.compare…with… 把…与…比较
113.compare…to… 把…比作…
114.by comparison 比较起来
115. in comparison with(=in contrast to)和…比起来
116. compensate for(=give sth. to make up for)补偿，赔偿，弥补;compensate sb. for sth. 赔偿，弥补
117. 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)
118. comply with(=act in accordance with a demand，order，rule etc.)遵守，依从
119. conceive of(think of，imagine，consider)想象，设想
120.concentrate on(or upon)集中，专心
