The system works like existing dockless bikeshare systems, where riders unlock bikes through a smartphone app.

该系统的工作方式与现有的无桩自行车的共享系统类似，骑行者通过智能手机应用程序解锁自行车。

This month, three U. S. bikeshare companies, Motivate, LimeBike and Spin, announced electric bicycles will be added to their fleets.

本月，三家美国自行车共享公司 Motivate、LimeBike 和 Spin 宣布它们也将提供共享的电动自行车。

New York-based Jump Bikes is already operating an electric bikeshare in Washington, D. C. , and is launching in San Francisco Thursday. Rides cost $2 for 30 minutes.

总部位于纽约的 Jump Bikes 已经在华盛顿特区筹划电动自行车的共享服务，并将于周四在旧金山推出：骑行每 30 分钟收费 2 美元。