And what I'll mention to you just in terms of the fact that -- we're finally dealing with real molecules, which is -- or molecules that are made up of more than one atom, which is kind of exciting for me and maybe for some other of you that like to move into thinking about what some of the consequences of these molecules reacting might be.

而我将要告诉大家的是,我们终于开始与真正的分子打交道了，或者说由多于一个原子所组成的分子，这让我和你们中的某些人感到有些兴奋,因为我们更喜欢思考这些分子,经过反应之后可能出现的一些结果。

麻省理工公开课 - 化学原理课程节选