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