23456789 All right, here I gave it a big number, 123456789. And again, I don't want to bore you, but you can see what's going on here with this trend.

我给出一个大数字，又一次，我并不想令你们感到枯燥，但你们可以自己看看会发生些什么,这儿有个有趣的问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

So you should be able to look at your periodic table and see this, or also I've written the trend here.

大家应该能够通过查周期表，或者通过看我写在这里的趋势看出来。

麻省理工公开课 - 化学原理课程节选

And again, we'll see this as an increasing trend as we work our way through the term.

我们会在以后的学期中,不断的加强学习这一点。

麻省理工公开课 - 计算机科学及编程导论课程节选

So let's talk about another periodic trend, this one is called electron affinity.

那么下面我们来讨论一下另一个周期性规律，它被称作电子亲和能。

麻省理工公开课 - 化学原理课程节选

Often what you'll see is not a table based on this definition, but something that's called the Pauling definition of electronegativity, but it's exactly the same idea and the same trend as this more numerical way to think about what the meaning of electronegativity is.

通常你看到的表格一般都不是基于这种定义的，而是基于,鲍林定义的电负性，但在意义上是相同的，并且满足同样的周期性规律,当和这种这种更数值化地理解电负性的定义,作对比时。

麻省理工公开课 - 化学原理课程节选