班主任强调了独立完成作业的重要性，但学生们仍然抄作业。

While the class teacher put emphasis on the importance of doing homework independently his students still spent most of the time copying others' homework.

这位机器人代课老师能抓住传纸条和抄作业的学生，也能相当严厉地教训他们。

The robot supply teacher was capable of catching students passing notes and copying homework as well as giving them a rather stern telling off.