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，又或者为 DOMS。

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

“OK”起源可以回溯到 1830 年代，那故意拼错。

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）为guac。

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

它是" how did it come about that" 形式。

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

无限密度是说“我不知道”。

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

用“should not”话，你可以成“shouldn’t”。

SETI stands for the Search for Extraterrestrial Intelligence.

SETI是“搜寻地外文明”英文。

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；广泛性焦虑障碍有被为GAD。

Do you know what the written abbreviation of milligram is?

你知道“毫克”是什么吗？

So this is a shorthand to achieve the same result.

所以这是实现相同结果。

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

没错，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被成K。有人们会在文件或其他东西底部上oll korrect。单词All开头被成了O。

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

这是大希腊字母，它是数学中总和。

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，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 ，在英国很常见。

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

所以，“I would” 对吧，也可以成“I'd” 。

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

而“I had” 也可以为“I'd” 。

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

所以我喜欢使用是，使电网脱碳并使一切电气化。