[dòng lì]
（各種作用力） motive power; power; dynamic
make power
產生動力
motive power
原動力
steam power
蒸汽動力
obtain power from waves
從波浪中獲得動力
Running water produces power to run mills
流水可以產生動力來推磨。
（推動力量） motive force; driving force; impetus
This can become a driving force for social advance.
這能成為促使社會前進的動力。
Children need an impetus to study.
兒童學習需要動力。