Prefixes are letters we add to the beginning of a word.

是我们添加到单词开头的字母。

And the whole God thing, that was just PR back in e e day.

还有神明什么的 只是个而已。

Now they've been around a long time.

这些已经出现很长一段时间了。

On the other hand, adeno- means gland.

而腺癌一词中的adeno-意指腺体。

See you all in my next video about negative prefixes.

我们下一个关于否定的视频中再见。

So we create new words by adding prefixes and suffixes to the root word.

我们通过向词根添加和后来创造新词。

IN- is a negative prefix that means no or not.

IN-是一个否定，表示没有或没有。

Students could focus on prefixes that are used to give a word an opposite meaning.

学生很有可能会关注词语的来获得相反的意思。

She uses the prefix hyper to say that there is too much of a certain quality.

她使用“hyper”来表示某种特质太多。

And then the same thing happens if you have a three-syllable verb with the prefix, okay.

一个的三音节动词也符合这个规则。

In metric units, which of these prefixes means " billion" ?

以下的公制单位中，哪一个表示" 十亿" ？

No, Neil, though it does have the same prefix – 'micro'.

不，尼尔，虽然它们有相同的" 微" 。

The prefix in can change the meaning of a word into its opposite.

in 可以把一个词的意思变成它的反义词。

For example, ’Un is a very common prefix in the English language.’

例如，在英语语言中un是一个很常见的。

The first prefix we are going to look at today is IL-.

我们今天要学习的第一个是 IL-。

Now, a prefix is a group of letters that you add to the beginning of a word.

现在，是一组放在一个单词面的一组字母。

So, when you add a prefix, you get two words for the price of one!

因此，当你给它加上的时候，就能得到买一送一的单词啦！

Or he's very 'pro' something -- well they're prefixes which have suddenly become different words.

或者是他非常‘pro’...这些是可以使单词突然变得不同的。

These prefixes are in order of thousand, million, billion, and trillion with giga denoting billion.

上述按顺序分别表示千、百万、十亿和万亿，其中giga表示十亿。

But in- is also a common negating prefix, leading to the second interpretation.

但是in-也是一个常见的否定，于是引出了第二种释义。