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

但in-也常见的否定前缀，于引出了第二种释义。

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

以下的公制单位中，哪前缀表示" 十亿" ？

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

不，尼尔，虽然它们有相同的前缀" 微" 。

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

IN-否定前缀，表示没有或没有。

See you all in my next video about negative prefixes.

我们下关于否定前缀的视频中再见。

As you can see, both words have the same prefix that means equal.

如你所见，这都有 意味着「均等」的首。

Would you like to improve your vocabulary by learning negative prefixes in English?

你想通过学习英语中的否定前缀来提高你的词汇量吗？

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

我们通过向词根添加前缀和后缀来创造新词。

So we have " usual" means ordinary, I put the prefix in, it means not ordinary.

我们有“寻常的”，意思普通的，我把前缀放进去，就变成不寻常了。

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前缀来获得相反的意思。

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

因此，当你给它加上前缀的时候，就能得到买送的单词啦！

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

上述前缀按顺序分别表示千、百万、十亿和万亿，其中giga表示十亿。

Now we mentioned the prefix re in rerun in this episode, to learn more about prefixes, click here.

现在，我们在这期节目中提到了“重播”词中的前缀 re，要想了解更多关于前缀的知识，请点击这里。

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

或者他非常‘pro’...这些可以使单词突然变得不同的前缀。

These are the prefixes we have learnt today.

这些我们今天学习的前缀。

The prefix of this word, kata, means “down.”

这的首意思“下”。

So, one of the keys to expanding your vocabulary is to use something called prefixes or suffixes.

所以，扩充词汇量的办法学习单词的前缀和后缀。

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

前缀我们添加到单词开头的母。

We'll explain what all three prefixes mean and give you lots of examples.

我们将会解释这三前缀什么意思，然后举很多例子。

You can go through the list alphabetically so then you start to see words that have the same prefix.

你可以按母顺序浏览列表，这样你就会开始看到有相同前缀的单词。