AProfessor, I've handed in my paper. Did you read it?
教授,我的論文已經(jīng)交了。你看了嗎?
BYes. You've done a good job. But there's one thing. You should narrow down your topic.
是的。你寫得不錯。但是有一個問題。你應(yīng)該縮小你的話題。
AWhat about water pollution instead of pollution?
用“水污染”代替“污染”怎么樣?
BWell done!
非常好!
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