More and more Chinese motorcycle manufacturers have begun to pay great attention to product development independently, especially the development of motor-engine.
越来越多的中国摩托车企业开始重视自主产品开发，尤其是动力总成的开发。
2
In 2006 he converted a powered hang-glider, removing its small combustion engine and replacing it with a battery and an electric motor.
2006年，他转向了动力滑翔机，同时把小型内燃机拆了下来，用电池和电动机来替代。
3
Normally you have an engine or motor going through a differential.