It's an aircleaningmachine 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。
2
A week with dry compressed air or a copper brush cleaningmachine 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。
3
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.