come about 发生,产生 come across (偶然)遇见(或发现) come back 回来,想起来 come down 落,下来 come from 出生(于),来自 come in 进入,进来 come off 从……离开,脱落 come on 来吧,赶快 come out 出来,(书等)出版,发行 come to 共计,达到 ...