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