plan B
替補(bǔ)計(jì)劃
日常·討論替代方案
英文釋義
an alternative plan or option, typically used when the original plan fails or is not feasible
例句
If the first idea fails, we'll switch to plan B and try a different approach.
典故來源
源自20世紀(jì)商業(yè)和軍事規(guī)劃,A代表首選方案,B代表備用方案,強(qiáng)調(diào)未雨綢繆。