◎ 留后路 liú hòulù[keep a way open for retreat;leave oneself a way of escape;leave a way out; leave oneself an option] 比喻办事时为防失败而预留退路 -----------------国语辞典:处理事情时,防备事有万一而预留退路。如:「这是一项缺乏完整资料的投资计划,他不敢全盘投资,乃是为自己留后路。」
◎ 留待 liúdài[leave sth.to be done later] 拖下来等待 [处理]这事留待他明天回来再定-----------------国语辞典:暂时保留,等待以后。《儒林外史.第三五回》:「今日回来,留待下次抡元。」英语 to leave sth for later, to postpone (work, a decision etc)法语 remettre à plus tard, reporter