And what you will found is they will fall almost at the same speed, not exactly the same speed, because of air resistance.

他们原本会以同样的速度下落，但实际上并不是这样，因为空气中存在着阻力。

youdao

But speed is really everything. Without speed, all the other features fall by the wayside.

但是速度就是一切，没有速度，其他所有的功能都被抛到了一边。

youdao

And so the question now is, if this ball bearing starts to fall, what is the speed that it will achieve?

现在的问题是，如果滚珠开始下落，会达到多大速度呢？

youdao

There has been an ongoing debate between experts over the steepness and speed of any forthcoming fall in house prices.

BBC: NEWS | Business | Q&A: Have house prices peaked?

It also showed that we seem to be putting history behind us more quickly, judging by the speed with which terms fall out of use.

WSJ: Culturomics Looks at the Birth and Death of Words

In this new world companies will rise and fall with unprecedented speed.

FORBES: Groupon��an Ordinary Company for a Revolutionary New Era