But even then, in most cases, they'll slow, stop, then re-collide.

但即便如此，在大多数情况下，它们还是会变慢，停止，然后再相互碰撞。

It said progress made before 2019 has since slowed, stopped, or moved back.

报告称，2019 年之前取得的进展已经放缓、停止或倒退。

Instead though, it goes up, slows, stops, then falls back down toward me.

而实际上，它却向上运动，逐渐减速，停止，然后回落到我这边。

But if you don't throw it fast enough, it'll slow, stop, reverse course, and fall back down.

但如果你扔的力度不够，它就会慢下来，直至停下、倒退。

But what if there was a way to  slow, stop or even reverse the process by removing that carbon from  the atmosphere?

但是，如果有一种方法可以通过从大气中去除碳来减缓、停止甚至逆转这一过程呢？

If you're at just the right spot on the planet's surface, this means you could actually watch the Sun rise, slow, stop, set again, then rise again!

如果你站在水星表面正确的位置，你就可以看到太阳升起，减缓运动，停止，落下，然后再次升起！

The idea behind the geometry of the Universe is that if there's enough matter in the Universe the expansion will slow, stop, and then everything will recollapse: a sort of Big Bang in reverse.

宇宙几何背后的理念是，如果宇宙中有足够多的物质，膨胀就会放缓、停止，然后一切都会重新凝固：这是一种反向的大爆炸。