I'm constantly having to mug up things ahead of teaching them.
我经常不得不在上课前攻读要讲的东西。
I'm constantly having to mug up things ahead of teaching them.
我经常不得不在上课前攻读要讲的东西。
He fell asleep during the lesson.
他在上课时睡着了。
I made the zip gun in class out of a toy airplane launcher.
我在上课时用玩具飞机发
器改制成了这把枪。
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