sth的意思是什么？

意思是：遲到做某事

How do you come to be so late?

你怎么這么晚？

《牛津詞典》

By the time he realizes he has walked into a trap, it'll be too late for him to do anything about it.

當(dāng)他意識到自己已經(jīng)落入陷阱時，做什么都已經(jīng)為時過晚了。

youdao

It may be too late to do anything—quite too late.

做任何事情都可能太遲了——太遲了。