rain-check

n (US) 1 ticket for later use when a match, show, etc is cancelled because of rain （比赛、 表演等）因雨延期有效票. 2 (idm 习语) take a rain-check (on sth) (infml 口) decline an offer, etc but promise to accept it later 谢绝一项好意, 但答应日後接受: Thanks for the invitation, but I'll have to take a rain-check on it. 你的邀请我心领了, 感谢盛意改日一定践约.

rags, ragtag, ragtime, ragweed, ragwort, raid, raider, rail, railhead, railing, raillery, railroad, railway, railway-line, railwayman, raiment, rain, rain cats and dogs, rain forest, rain out, rain-gauge, rain-swept, rain-water, rainbow, raincoat, raindrop, rainfall, rainforest, rainless, rainproof, rainy, raise, raise...out of, raisin, raison d'etre, raj, rajah (also raja), rake, rake-off, rakish,