This is known as Delayed Onset Muscle Soreness, or DOMS for short.

这即是我们所熟知延迟性肌肉酸痛，又或者简写为 DOMS。

" OK" actually traces back to an 1830s fad of intentionally misspelling abbreviations.

“OK”源可以回溯到 1830 年代，那时流行故意拼错简写。

The new words include shorter versions of other words like guac for guacamole.

新单词包括其他单词较短版本，如guacamole（鳄梨酱）简写为guac。

It is a short form of " how did it come about that" .

它是" how did it come about that" 简写形式。

Infinite density is a shorthand of saying, " I don't know."

无限密度是“我不知道”简写。

With 'should not', you can contract it to 'shouldn't.'

用“should not”话，你可以简写成“shouldn’t”。

SETI stands for the Search for Extraterrestrial Intelligence.

SETI是“搜寻地外文明”英文简写。

This anxiety may be a sign of Generalized Anxiety Disorder, sometimes shortened to GAD.

这种焦虑或许是广泛性焦虑障碍征兆；广泛性焦虑障碍有时被简写为GAD。

Do you know what the written abbreviation of milligram is?

你知道“毫克”简写是什么吗？

So this is a shorthand to achieve the same result.

所以这是实现相同结果简写。

That's right, much shorter to just B-B-Q.

没错，简写成B-B-Q要短得多。

All was spelled with an O at the beginning.

OK根本就不是一个单词。在两百年前，单词correct被简写成K。有时人们会在文件或其他东西底部写上oll korrect。单词All开头被写成了O。

So this is the capital Greek letter sigma right over here, it's shorthand math, math shorthand for sum.

这是写希腊字母，它是数学中总和简写。

I'll have to use scientific notation, which is a shorthand way of expressing numbers using powers of ten.

我必须使用科学表示法，这是一种用10乘方来表示数字简写方式。

That crusading crackdown was led by a U.N.-backed anti-corruption commission known as CICIG for its initials in Spanish.

这场坚定打击行动由联合国支持反腐败委员会“反对有罪不罚国际委员会”（西班牙语简写CICIG）开展。

Technically they're known as autonomous, unmanned ground vehicles, UGVs but we like to call them robot " dogs" .

从技术上讲，它们被称为自主无人地面交通工具，简写为UGV，但我们喜欢称它们为机器“狗”。

So, it's just a short way of saying a cup of tea very common word here in the UK.

这是 a cup of tea 简写，在英国很常见。

So, " I would" , right, could also be shortened to " I'd" .

所以，“I would” 对吧，也可以简写成“I'd” 。

And " I had" can also be shortened to " I'd" .

而“I had” 也可以简写为“I'd” 。

So the shorthand I like to use is, decarbonize the grid and electrify everything.

所以我喜欢使用简写是，使电网脱碳并使一切电气化。