xué / shēng / àn / zhào / lǎo / shī / de / yāo / qiú / liàn / xí / huà / bù / tóng / jiǎo / dù / de / tòu / shì / tú

学生按照老师的要求，练习画不同角度的透视图。

The students practiced drawing perspective views from different angles as the teacher instructed.