名词
中文翻译：清洁的集合
同义词：
['clean assemblage', 'clean group', 'tidy collection']
例句：
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1.The museum has collected a wide range of artifacts from around the world.
博物馆收藏了来自世界各地的各种文物。
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2.After cleaning up the room, we gathered our belongings and left for the airport.
清理完房间后，我们收拾好行李，准备去机场。
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3. The teacher asked us to clean up the classroom before class began.
老师要求我们在上课前打扫教室。