Then a variant, by the way, of number one the falsifying things, is whether the record-keeping itself is reactive.

然后还有个变数要说一下,关于篡改记录,是否只是为了记录而记录

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And what it's used is to convert one type of group, what's called a carboxylic acid into another type of very reactive intermediate, which is called an acid chloride.

它被用来将一类被称作羧酸的化合物，转化成另外一类活性很高的反应中间体,也就是酰氯。

麻省理工公开课 - 化学原理课程节选

Did people on the reactive center gets lazy and complacent after defending free markets after 1989?

控制局势的人士,是否变得懒惰和自满,在1989年为自由市场辩护后？

斯坦福公开课 - 经济学课程节选

But in terms of drugs that don't look like maybe this compound was used in the synthesis, many of them might have used thionyl chloride, because it generates such a nice reactive intermediate that you can go on and make a bunch of different compounds from that intermediate.

但是对于药物来说,它们可能跟合成过程中用到的这种化合物并不相像，很多药物的制造过程中都会用到亚硫酰氯，因为它能产生活性如此之高的反应中间体,以至于你可以继续利用反应中间体,来制造一堆不同类型的化合物。

麻省理工公开课 - 化学原理课程节选

This is the very reactive intermediate.

这是一种非常容易反应的中间体。

麻省理工公开课 - 化学原理课程节选

So if you're trying to make a more complicated organic molecule carbon-carbon bonds are one of the most difficult things to make in organic chemistry, and it turns out that c n minus is a very reactive molecule, so it's a good way, even though we'll go over some drawbacks in a second, it is a good way to make carbon-carbon bonds.

如果你要合成一个更复杂的有机分子,碳碳键是有机化学中,最难制造的键之一，而实际上氰离子是一种具有很高活性的分子，用它是一个好办法，尽管我们一会儿将看到它的一些缺点，但它的确是一个制造碳碳键的好方法。

麻省理工公开课 - 化学原理课程节选

It's very reactive.

它非常容易反应。

麻省理工公开课 - 化学原理课程节选

- So, for example, if he was talking about the group one metals, he noticed these were all very soft reactive metals, those were grouped together.

比如，他在讨论，I，族金属，注意到它们都是质地较软的活性金属，这些被归到一类。

麻省理工公开课 - 化学原理课程节选

I just wanted to point out that although you see these chlorine atoms in these drugs, in fact, I don't think I've ever seen an acid chloride in a final pharmaceutical product or drug that we take, and the reason is because they're so reactive that you wouldn't want to have that in something you digest.

我只是想指出一点,那就是尽管你在这些药物中看到了氯原子，实际上，我想我从来都没有在一个,成品的药用产品或者药物中见到过酰氯，这原因是因为它们太容易反应了,你不会想让它们出现在你要消化的东西中。

麻省理工公开课 - 化学原理课程节选

So that explains why they're so reactive, they're all very willing to give up that one s orbital and then drop to a lower energy level.

这就解释了它们的化学性质为什么非常活泼，它们都很愿意失去那个，s，电子,然后降到更低的能级上去。

麻省理工公开课 - 化学原理课程节选