The atoms or molecules in the gas don't know that there are other atoms and molecules in the gas, and then you end up with this universal property. All right, so gases that have this universal property, even when the pressure is not zero, those are the ideal gases.

可以忽略,这样就得到了理想气体的性质,在有限压强下,依然能保持这些性质的气体，被称为理想气体，本课中我们把大部分气体，都作为理想气体来处理。

麻省理工公开课 - 热力学与动力学课程节选

And America has to recognise that we're one nation playing our role and trying with other nations to create a world that stands for universal values or that lives up to universal values.

我们必须意识到，我们只是一个国家,做好我们的本分,试着和其他国家一道,建造一个拥有共同价值观的世界,或追求共同价值观的世界。

普林斯顿公开课 - 国际座谈会课程节选