1、动量，冲量。

The sledge gained momentum as it ran down the hill.

雪橇从山上下冲时动量越来越大。

2、冲力。

The vehicle got momentum as the road dipped.

下坡时，车辆冲力增大。

3、动力，势头。

I am picking up momentum every single day.

我现在每天都会获得动力。