a bicycle with an electric motor that helps to move the bicycle forward even when the rider is not turning the pedals, also often used to refer to any bicycle with an electric motor, including those where you must turn the pedals

The advantages of e-bikes are that they are clean, quiet, and efficient. 电动力自行车的优点是干净、安静、高效。

Getting to work more quickly is only one benefit of the e-bike. 能让人更快到达工作地点只是电动力自行车其中一个优点。