[dòng lì]
（各种作用力） motive power; power; dynamic
make power
产生动力
motive power
原动力
steam power
蒸汽动力
obtain power from waves
从波浪中获得动力
Running water produces power to run mills
流水可以产生动力来推磨。
（推动力量） motive force; driving force; impetus
This can become a driving force for social advance.
这能成为促使社会前进的动力。
Children need an impetus to study.
儿童学习需要动力。