for a rainy day 以防不時(shí)之需(成語(yǔ))
英文釋義
For a future period of unexpected financial need; for a time when a person has less money that required.
例句
My parents taught me to save some money for a rainy day, so if I lose my job, I can survive for a while until I find a new one.
父母教導(dǎo)我,要存些錢以防不時(shí)不需,所以如果我失業(yè)了,我有能力維持生活,直到找到新工作。