拓展 set about sth./doing sth.着手干某事 set off 出发,动身;激起,引起
set back 使推迟;使延误;把(钟表指针)往回拨 set down 写下,记下;制定 set fire to...放火烧 set up 建立;开办
set an example for sb.为某人树立榜样