the train so as to keep these places clean的翻译：正在翻译，请等待... 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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列车，以保持这些地方的清洁

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火车以便保持这些地方清洗

的培训,以使这些地方清洁

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