He completed his homework sloppily and got a poor grade.

他马虎地完成了作业，结果得了一个很差的分数。

Today , I got a poor grade.

今天，我得了个坏成绩。

When it comes to school work, this translates into a poor grade!

当这种情况发生在学习上，直接导致的后果就是惨不忍睹的成绩！

Do you recall why Dawson was given such a poor grade on this report?

为什么这份报告会给道森如此可怜的等级?