This most recent collision with Jupiter brought attention to how the huge planet's gravity affects our solar system.

VOA: special.2009.08.25

So what happens almost instantaneously after the collision, the electron up here falls back down.

所以在碰撞后,几乎同时，在这儿的电子又回去了。

麻省理工公开课 - 固态化学导论课程节选

If the vehicle in the unfortunate circumstances of a collision, has to be able to maintain the security of the hydrogen which means more mass, which means a lot of the efficiency is being squandered What's the environmental impact of hydrogen production?

如果车辆,在碰撞中发生了不幸，要仍然能够保持氢气的安全性的话,意味着需要更多的质量，也就是说大部分效率被浪费了,制氢对环境有什么影响呢？

麻省理工公开课 - 固态化学导论课程节选

And already we have cars that park themselves,collision avoidance systems that the car tells you that you're about to hit something or back into something.

VOA: special.2011.06.21

Before the collision, Iridium had a group of sixty-six satellites in orbit.

VOA: special.2009.04.01

But astronomers have seen a similar collision.

VOA: special.2009.08.25