8月21日，一位运维人员在天津大悦城门口摆放单车。今年夏天以来，津城高温不断，一群“90后”小伙顶着烈日穿梭于城市的大街小巷，他们就是某品牌共享单车的运行维护工作人员，被称为“单车调度员”。将单车收集定点归位摆放、利用大数据寻找、定位并维修“问题单车”再投放等是他们每天的重要工作。这些运维人员的努力让共享单车更便利人们的生活。[新华社 史淞予 摄]
A dispatcher of shared bikes puts bikes in order in front of a shopping center in north China's Tianjin, Aug. 21, 2017. Despite the sweltering weather in Tianjin, dispatchers, also as maintenance workers, travel across the city to ensure the bikes are put in order and function well. (Xinhua/Shi Songyu)