以上所述，只是使用“rain check”的一种具体情境。至于“rain check”的一般涵义，还得查考词书：
1. rain-check①(球赛等因下雨而中断后）留作下次继续使用票根；②延期：give a rain check on a dinner
                                                                       ——《新英汉词典》
2. rain check n 1 ； a ticket stub good for a later performance when the scheduled one is rained out 2: an assurance of a deferred extension of an offer;esp :an assurance that a customer can take advantage of a sale later if the item or service offered is not available
(as by being sold out)
                                                                        —WNCD
3. rain check. . . n AmE 1 a ticket for a later performance, when rain has stopped a public match of show 2 infml an agreement that one may claim latter something that is being offered now ： I don't want a cigarette now, thank you, but I'll take a rain check on it.
                                                                         —LDCE
由此可见：
甲、"rain check”可以由权充，也可以是因故（下雨或其它原因）另行发给、供以后使用立凭证；    乙、以准予延期使用者的口吻说，动词用“ give”(a rain check on...);而用被准予延期使用者的口气说，则用动词“take”（a rain check on …）；
丙、“rain-check”此词在使用过程中已经可以离开任何具体的“凭证”，而抽象地表示“延期干……”“慢慢再来”了。如LDCE中的最后一例：“谢谢，现在不想抽，回头抽罢”--- 实际上对话人之间并没有授受什么有形的“rain check”。这样“rain check”就既同 “rain”无关，也同“cheeks”无关了。