If we calculate the change in entropy during gas mixing, we will find that this quantity is positive.

如果我们计算气体混合过程中熵的变化，我们会发现这个量是正的。

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Sometimes, however, a stream of electrons following an established channel is met by a positive stream making a new path up from the ground.

然而，有时，沿着已建立的通道的电子流会遇到正的电子流，正的电子流从地面开始形成新的路径。

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The stream of positive particles that meets the surge of electrons from the cloud often arises from a tall pointed structure such as a metal flagpole or a tower.

来自云层的电子流与正粒子流相遇，而这些正粒子流通常来自于高而尖的结构，如金属旗杆或塔。

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So, for example, for the chlorine case, we would say that the electron affinity for chlorine is actually positive 349 kilojoules per mole.

比如，以氯为例，我们可以说氯的电子亲和能,应该等于正的，349，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

And we saw that in fact in this case delta S of mixing, we calculated it, saw that it is positive.

实际上如果我们计算气体混合过程中,熵的变化，我们会发现这个量是正的。

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One major difference between electron affinity and ionization energy is that when we talked about ionization energy, remember ionization energy always has to be positive.

电子亲和能,与电离能之间最大的不同就在于,当我们提到电离能的时候，记得电离能总是正的。

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