momentum
n. 冲力，推力；动力，势头；动量，冲量
复数 momenta或momentums
例句
The vehicle gained momentum as the road dipped.
那辆车顺着坡越跑冲力越大。
《牛津词典》
The spinning top was losing momentum.
旋转的陀螺正在失去动量。
One kind of momentum is technological momentum.
有一种动力是技术动力。
