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Drivers stand in front of green energy buses in Bengbu, east China's Anhui Province, Nov. 20, 2017. So far, the city has introduced 783 green energy buses. (Xinhua/Liu Junxi)

Drivers stand in front of green energy buses in Bengbu, east China's Anhui Province, Nov. 20, 2017. So far, the city has introduced 783 green energy buses. (Xinhua/Liu Junxi)