We looked at additives to feed, such as 3-NOPs, reduce emissions by about 30 percent.

我们研究了饲养的添加剂，比如3-NOPS（3-硝基氧丙），减少约 30% 的排放。

Usually, markers use ethanol, which is the kind of alcohol people drink, or isopropanol — aka rubbing alcohol — because they evaporate quickly.

通常来说，马克笔使用的是乙，也就是人们喝的那种精，或异丙，也称为医用精，因为它们会迅速蒸发。

But now surround it with a high concentration of an alcohol, like the ethanol or isopropanol found in most hand-sanitizers.

但是现在，我们用高浓度精，也就是多数免洗洗手液都含有的乙或异丙裹住它。

They also recommended phenylpropanolamine and pseudoephedrine.

他们还推荐了苯丙胺和伪麻黄碱。

Phenylpropanolamine was generally considered unsafe by 2000 because it caused some hemorrhagic strokes.

到 2000 年，苯丙胺被普遍认为是不安全的，因为它会导致出血性中风。

But ethanol and isopropanol are teeny.

但是乙和异丙很小。

Usually, markers use ethanol, which is the kind of alcohol people drink, or isopropanol—aka rubbing alcohol—because they evaporate quickly, which means it's harder to accidentally smudge whatever you've just written.

通常记号笔会用乙或异丙制作——乙是一种食用精，而异丙又名医用精。这是因为它们挥发较快，无论你刚写下什么，都没那么容易无意中抹脏。

What did happen to the pseudoephedrine or the phenylpropanolamine?

伪麻黄碱或苯丙胺怎么了？

The bugs in question can be curbed by adding either of two substances to cattle feed, a chemical called 3-nitrooxypropanol, or a seaweed called Asparagopsis taxiformis.

所讨论的这些细菌通过向牛饲料中添加两种物质中的任意一种来控制，这两种物质分别是名为3-硝基氧丙的化学物质或名为石松类红藻(Asparagopsis taxiformis)的海藻。

These wafer washers use ultra-pure water to clean the wafer and then dry it with nitrogen or hot isopropyl alcohol.

这些硅片清洗机使用超纯水清洁硅片，然后再用氮气或热异丙干燥。

Rubbing alcohol's real name is isopropyl alcohol.

真名是异丙 ISO。

But ALCOHOL GROUPS interact with water, because water is also made of hydrogen and oxygen.

与水相互作用，因为水也由氢和氧组成，异丙的名称。