take a rain check (on something) idiom informal
（用于婉拒邀请）下次吧，以后再说，以后再叨扰
used to tell someone that you cannot accept an invitation now, but would like to do so at a later time
Mind if I take a rain check on that drink? I have to work late tonight. 这杯酒你改天再请我喝好不好？今晚我得加班工作。