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

上按顺序别表示千、百万、十亿和万亿，其中giga表示十亿。

Adding the prefix for created forlorn, meaning to be lonely or sad.

加上“for”就构成了“forlorn”，意为“孤独的”或“悲伤的”。

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。

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，然它们有相同的" 微" 。

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

如你所见，这两个字都有 意味着「均等」的字首。

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

是我们添加到单词开头的字母。

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。

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。

The prefix hyper is used before an adjective to show having too much of that quality, for example hypercritical means being too critical.

“hyper”用于形容词，表示具有太多的该特质，例如吹毛求疵是指过于挑剔。

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。

I mean they know more about multiple meanings, prefixes, suffixes, word rules.

我的意思是他们更了解多种含义，，后，单词规则。

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

这字的字首意思是“下”。

For example, linguists use special language to describe the way language works - words such as prefix, suffix, tense, - or the words I used just now - verbal repertoires, a language variety.

例如，语言学家用特殊的词汇来描语言的功能，例如、后、时态… … 或者我这次用到的词verbal repertoires（语言技能）——是语言的一种。

So, this happens across the board with many two-syllable words, not just with the CON prefix but with other ones too, we'll stick to these for now.

所以这个就是相对于双音节词的例外，不仅仅是 con 是这样，其他也会这样，我们现在就说这种情况。

They just add “smart” as a — you know, a prefix to say, " Oh, you must buy this because it's smart." It just — no.

他们只是加上“智能”作为，表示“哦，你必须买这个，因为它是智能的。”它不是这样的。

The prefix " synthetic" referred to the idea of creating a synthesis of fragments from the real world and the painting world.

“合成的”是指从现实世界和绘画世界中合成碎片的想法。

Now, we heard the word overspend, but we can also add this over prefix to many other words, such as overuse or overeat.

现在，我们听到了“overspend” 这个词，但同样可以在许多其他词加上“over” ，比如“overuse”（过度使用）或“overeat” （暴食）。

“Under” can also be used as a prefix—a group of letters added at the beginning of a word to change its meaning.

Under 也可作，指的是一组字母加在一个单词的开头来改变单词的意思。

True Adjectives are usually placed before the nouns they modify, but adjectives with the prefix a- do not come before a noun.

正确形容词通常放在它们所修饰的名词之，但是以“a-”为的形容词不能放在名词之。