" Nox, " they whispered together, and the lights at the end of their wands went out.

“诺克斯”两人一起念念有词，于是，两条魔杖末端的光芒就消失了。

So, I think a better question would be what can we do about NOx pollution.

所以，我认为一个更好的问题是我们能为氮氧化物污染做些什么。

It is the combination of two words, aequus and nox, and refers to when the length of day and night are roughly equal.

它是由“aequus”和“nox” 两个词的组合而成，指白天和黑夜的长度大致相等。

And then in real-world condition, it emits far more of the harmful emissions such as NOx into the air than is legally allowed.

然后在现实世界中，它向空气中排放的有害排放物（例如氮氧化物）远远超过法律允许的数量。

This is an outgrowth of our work in Europe. And it's been known in Europe for five to 10 years that diesel cars have high in-use NOx emissions.

这是我们在欧洲工作的结果。在欧洲，柴油车的氮氧化物排放量很高，这在欧洲已经5到10年了。