ball rolling

基本解释

And in practice our proclivities are things we allow ourselves, like a ball rolling down its natural course.
在实践中，我们的癖性是被我们自身纵容的东西，就好像一颗球顺应自然规律从高处滚下。
For a ball rolling across the floor, that outside force could be the friction between the ball and the floor, or it could be the toddler that kicks the ball in another direction.
对于一个在地面上滚动的球而言，外力可能是球与地面之间的摩擦力或者幼童相反方向踢球产生的力。
We telephone her parents and the British Embassy to set the ball rolling.
我们给她的父母和英国大使馆通了电话，球开始转起来了。

and doing things like that to really begin, get the ball rolling,
真的做了一些事情，真正行动起来，
对全球变暖的政策 - SpeakingMax英语口语达人

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