I can measure that, because I pull it by one centimeter and I find the acceleration it exerts on a known mass.(我可以測量它了，因為我把它拉到了一厘米，我發現它對一個已知質量施加的加速度。)

That is only one-fifth of the gravitational acceleration.(僅為重力加速度的,五分之一。)

So, the acceleration vector is;.(那加速度就是。)

That is the instantaneous acceleration.(這也就是瞬時加速度。)

We have come to expect an acceleration of music during car chases and creaky doors in horror films.(我們已經開始期待在汽車追逐時音樂的加速和恐怖電影中嘎吱作響的門。)

And, as it rotates, it USES acceleration.(隨著它的旋轉，就產生了加速度。)

The engine delivers instant acceleration whatever the revs.(不論轉速如何，發動機都可以立即加速。)

What does that mean for the acceleration?(就加速度而言這意味著什么呢？)

One is the acceleration of the substitution of knowledge and capital for manual labor.(一是知識和手工資本的替代加速。)

It's a very modest acceleration.(一個很小的加速度。)