But in the absence of any service, we have found that it is able to remove that barrier in some cases."

VOA: standard.2010.06.14

So, clearly, if we remove this barrier mixing takes place and obviously you know that that happens from lots of experience.

所以很明显，如果我们拿走隔板,气体混合就会发生,我们从大量的实际经验中就可以知道这些。

麻省理工公开课 - 热力学与动力学课程节选

when we remove the barrier and the gases mix, you know it's over.

当我们移走隔板并且气体混合后，我们知道事情就结束了。

麻省理工公开课 - 热力学与动力学课程节选