OK, important -- if you are part of this group here think about it and make sure you understand that.

好的，这很重要，如果刚才你选了可逆过程,请好好想想并且保证已经理解了这个问题。

麻省理工公开课 - 热力学与动力学课程节选

OK, so we've got UV light here, and let's see what we can see, and we lose electrons, if that's what's happening.

好了，我们已经有了紫外光源，让我们来看看能观察到什么，如果那些事情发生了，我们将会失去电子。

麻省理工公开课 - 化学原理课程节选

OK, so now we've got, taken an electron from that sulfur, put it here, an electron from that sulfur, put it here.

现在我们得到的是，从硫那儿得到一个电子，放在这儿，一来自于硫的电子，放在这儿。

麻省理工公开课 - 固态化学导论课程节选

So you assume, well that's ok, the police are here, the fire brigade are here and the ambulances are here - so that's ok, we are now safe - the event is over.

BBC: Back to work: The BBC's Stephen Evans

OK, here's one: Will Ray Kelly jump into the mayoral race and take on his critics?

WSJ: The Weekend Interview with Ray Kelly: The Political War on the NYPD

Ok, here goes: the Optimus isn't being shown at CeBIT after all.

ENGADGET: Optimus Maximus: the god of keyboards unveiled