1、clean過去式：cleaned。

2、翻譯：潔凈的；干凈的；愛干凈的；愛整潔的；無有害物的；無污染的。

3、例句：It is your responsibility to keep the room clean and tidy .保持房間整潔是你的職責(zé)。

4、I can't find a clean shirt (= one I haven't worn since it was washed) 我找不到一件干凈的襯衫。