你完成了一些小概率事件，比如，完成了马拉松全程。

You finish something very few percentage have…a marathon.

youdao

我猜我能说我在20分钟内跑完马拉松全程，但这两者是一回事儿么？

I guess I can say I ran a marathon in 20 minutes, but isn't that pretty much the same thing?

youdao

当然，在跑马拉松全程之前先从一半(13.1英里)跑起是个好主意。

It's definitely a good idea to complete a half marathon (13.1 miles) before a full marathon.

youdao