classroom cleaning
教室的清洁
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They are cleaning the classroom.
他们正在打扫教室呢。
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By the time the teacher came, we had finished cleaning the classroom.
老师来的时候，我们已经打扫完教室了。
We are both cleaning the classroom.
我们俩人都在打扫教室。
If chosen to participate in this program, youngsters can expect long days filled with watch standing, cooking, cleaning, navigating, and learning how to maintain this traveling classroom at sea.
FORBES: The Real Deal... Mike Horn Takes Young Explorers to the Far Corners of the Planet
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