A battery-powered world comes with its own risks, too.
一个利用电池供电来运行的世界也有其自身的风险。
In order to get some information, Mr. Smith turned on the battery powered radio.
为了得到一些信息,史密斯先生打开了电池供电的收音机。
Boeing has flown a Dimona motor glider with an electric motor powered by a fuel cell.
波音公司试飞了一架利用燃料电池做动力来驱动电动机的迪莫诺动力滑翔机。