That's why the group favors retrofitting existing cars with electric-drive engines.
这就是为什么这个组织希望用改进现有汽车，用电作为动力的方法来达到目的。
2
In addition to general lighting, the box has built-in LED reading lamps while Windows are equipped with electric-drive blinds for privacy.
除一般照明外，盒子还有内置LED阅读台灯，而窗户也配备电动百叶窗来保护隐私。
3
In a report released last December, the U.S. Department of Energy estimated that widespread use of electric-drive vehicles and offshore wind farms could cause shortages of these metals by 2015.