cash in 兑现;收到…的货款
cash in on 靠…赚钱,乘机利用
cast about for 搜索,寻觅
cast aside 消除,抛弃;废除
cast back 回想,追溯
cast oneself on 委身于,指望
catch at 想抓住;渴望取得
catch on 理解,明白,变得流行
catch up with 赶上;指出…出了差错
be caught up in 对…特别感兴趣
cave in (使)下陷,坍塌