rain check/ˈ· ·/ n I'll take a rain checkspoken used to say that you cannot accept an offer or an invitation now but you would like to at a later time 【口】 改天吧〔用于暂时拒绝某人的提议或邀请,但以后可能会接受〕: "Can I buy you a coffee?" "Not right now, but I'll take a rain check!" “我能请你喝杯咖啡吗?”“现在不行,改天吧。”