It's an air cleaning machine connected to a bicycle and is part of the Smog Free Project.
这是一台连接到自行车上的空气净化机，是雾霾净化项目的一部分。
A week with dry compressed air or a copper brush cleaning machine back condenser more than once.
每周需用干燥的压缩空气或铜刷清理机台背部冷凝器一次以上。
Warning: Make sure to check that compressed air and power supply are disconnected before cleaning. If not, disconnect them. Organic solvent shall not be used to clean the machine.
警告：在清洗之前必须检查压缩空气和电源是否关闭。如果没有关闭，请关闭压缩空气和电源。严禁使用有机溶剂清洗机器。
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