So, I congratulate you of being here in this class, MIT this is really good solid foundation for whatever you go on to do, here at MIT.

所以我要恭喜来上这课的每一位同学，这确实是你要在,学任何东西的基础。

麻省理工公开课 - 化学原理课程节选

Maybe you're not looking at a reaction, but you've got some new compound, and you're looking at it go from liquid to solid or to gas.

也许你研究的不是一个反应,但你得到了一种新的化合物,你看着它从液体变成了固体或气体。

麻省理工公开课 - 热力学与动力学课程节选

Does stuff change phase to go from liquid to solid and so forth, right?

物质是否从液体转变为固体,相变到底在什么位置出现？

麻省理工公开课 - 热力学与动力学课程节选