跳舞趣事 » fun dance 保持教室干净 » Keep classroom clean 年轻时学习，年长时懂得 » When they are young, older, learning to understand ..
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Keep classroom clean sanitation 保持教室清洁卫生
Keep the classroom clean 保持教室干净 ; 保持教室整洁 ; 使教室保持干净 ; 保持教室清洁卫生
Keep our classroom clean 保持我们教室的清洁 ; 保持教室清洁
We keep our classroom clean 我们保持教室干净
Keep clean and neat classroom 保持教室干净整洁
Keep the classroom clean and 保持教室干净
keep your classroom clean 使你的教室干净
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