他们整体状况不佳，我不知道为什么会这样，也不知道年龄有什么区别。

They seem to do less well overall. We don't know exactly why that is the case, what is the difference.

youdao

他们整体状况不佳，我不知道为什么会这样，也不知道年龄有什么区别。

They seem to do less well overall. We don't know exactly why that is the case, what is the difference.

youdao