以前他是个极优秀的教授。可这段日子他从来不布置作业，而且上课时经常迟到。

He used to be a great professor, but these days he never assigns homework and always starts class late.

youdao

以前他是个极优秀的教授。可这段日子他从来不布置作业，而且上课时经常迟到。

He used to be a great professor, but these days he never assigns homework and always starts class late.

youdao