It means that the molecules or the atoms and the gas don't know about each other.

气体分子本身的体积,可以忽略不计。

麻省理工公开课 - 热力学与动力学课程节选

It is not about providing opportunities for people to get to know each other and to build friendships.

不是为人们提供机会,互相了解,建立友谊。

麻省理工公开课 - 媒体、教育、市场课程节选

Discussing this game raised not just each person's sophistication, but it raised what you know about other people's sophistication, and you know that other people now know that you understand how to play the game.

对这个游戏的分析,不仅让每个人都更老练了,也使你们更了解别人老练的程度,并且你知道别人知道,你知道如何玩好这个游戏

耶鲁公开课 - 博弈论课程节选

And a lot of children I have come from different cultures, actually we cannot give them more insight into another culture, because even though they go to school with one and another, they don't know that much about each other's backgrounds, where they come from, or what part of world , what language they speak at home.

很多的孩子都是来自于,不同的文化，事实上我们给不了他们,对于其他文化的更多的见解，因为即使他们和其他的,孩子一起来上学，他们并不知道,其他人的背景，他们来自哪,或者世界的那部分，他们在家说什么语言。

麻省理工公开课 - 媒体、教育、市场课程节选