科学家们在液体中观察到了同样的驱动力。Scientists observe the same dynamics in fluids.政治有其自身的驱动力。Politics has its own dynamic.我们把这个力叫做作用在粒子上的驱动力.We shall refer to this force as the driving force on the particle....

“驱动力”的英语可以翻译为：[化] driving force ...