他昨天一直学习到深夜，或者更确地说，一直到今天凌晨。

He studied till late last night, or rather, early this morning.

youdao

他昨天一直学习到深夜，或者更确地说，一直到今天凌晨。

He studied till late last night, or rather, early this morning.

youdao