Shall we go for plan A or plan B?

我们采用第一方案还是第二方案？

《牛津词典》

If Plan A fails, go to Plan B.

假如第一方案失败了，就执行第二方案。

《牛津词典》

Understand what she's trying to accomplish and propose a Plan B that will make it happen without destroying what you've done so far.

了解她想要实现的目标，并提出一个 B 计划，在不破坏你目前所做的事情的前提下实现它。

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Plan B One-Step and the older, generic versions of Plan B that require two pills are currently sold without a prescription to women age 17 and older.

WSJ: FDA Keeps Limits on Other 'Plan B' Contraceptive

"Everything is going a little bit better than anticipated, " Laurence Golborne told CNN about the three holes -- dubbed Plan A, Plan B, and Plan C -- being dug in an effort to open a passageway to safety for the men.

CNN: STORY HIGHLIGHTS

Not just a Plan B - but a Plan MacB.

BBC: Alex Salmond's Plan Macb