Versus looking at, for example, helium or neon or argon, these are all inert gases, inert meaning essentially do not react, those were grouped together in the periodic table.

相反，他发现氦，氖，氩，都是惰性气体，惰性的意思是基本不参与化学反应，因此把它们放在周期表中的同一类里。

麻省理工公开课 - 化学原理课程节选

If I present the same thing in another context or background or environment, then you react very differently.

如果我用另一种表述方式来叙述同样的事件,或者更换背景及环境，你的反应会完全不同。

耶鲁公开课 - 金融市场课程节选

A lot of the examples that we're going to give you in terms of trying out your Lewis structures will be molecule that are used in organic synthesis, or maybe they're molecules that react in interesting ways with biomolecules in your body or proteins in your body.

很多我们将要用来,训练路易斯结构的例子,都是在有机合成中用到的分子，也有可能是那些在你体内的生物分子,或者蛋白质中发生有趣反应的分子。

麻省理工公开课 - 化学原理课程节选

Or other things might react spontaneously.

对吧？或其他的一些。

麻省理工公开课 - 热力学与动力学课程节选