warnvt.警告;告诫;预先通知vi.发出警告
warn sb. to stay away警告某人不要靠近
warn sb. to be careful告诫 ... 要小心
Warn users of the action警告用户此操作
warn sb against doing sth让某人警惕或提防某事物
warn hydrostatic extrusion温静液挤压
Warn sb of possible dangers提醒某人可能存在的危险
warn sb. against that men劝某人对那人要提防点
Warn them of possible dangers警告他们可能有危险
Warn me if authentication fails警告如果验证失败