One obvious question is, where should the checking be performed?

一个明显的问题是，在何处执行检查？

youdao

Checking on that for you. This might answer your question.

正在帮你算，这可能是你需要的答案。

youdao

Checking on that for you. This might answer your question.

正在帮你算，这可能是你需要的答案。

youdao