由于睡过了头，他今天上课迟到了。

Being over-slept, he was late for class today.

youdao

他遇到了交通堵塞。那就是他今天上课迟到的原因。

That is the reason why he was late for class.

youdao

他遇到了交通堵塞。那就是他今天上课迟到的原因。

That is the reason why he was late for class.

youdao