Adding a prefix to a word makes a new word with a new meaning.

给单词添加一个前缀就会造就一个具有新含义的新单词。

So, you may have to try different prefixes to see if it sounds right.

所以，你可能需要尝试不同的前缀，看看它听起来是否正确。

Some use rich systems of suffixes and prefixes to build enormous, dense words.

有些使用丰富的后缀和前缀系统来构建巨大而密集的单词。

That helps you to remember which prefix to use with which word.

这有助于您记住哪个前缀与哪个单词一起使用。

How do you know, and what if you don't know which prefix to use?

你怎么知道，如果你不知道使用哪个前缀怎么办？

Concentrate on the root or the word itself before you concentrate on which prefix to join to it.

在专注于加入哪个前缀之前，先专注于词根或单词本身。

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”作为前缀，表示“哦，你必须买这个，因为它是智能的。”它不是这样的。

That’s what “promote” reminds me of; it reminds me of “progress”, and it has the same prefix to it: “pro”.

这就是“促进” 让我想起的； 它让我想起了“progress”，它有相同的前缀：“pro” 。

So, let's move on to the next column, so: " dis" is another prefix to turn words to the negative.

那么，让我们继续下一栏，因此：“dis”是另一个将单词转为否定词的前缀。

They do this by giving prefixes to compounds for the number of carbons in a chain, suffixes based on parent functional groups, and ranking functional groups somewhat arbitrarily for precedence.

他们通过为链中碳原子数的化合物添加前缀、基于母体官能团的后缀以及在某种程度上任意排列官能团的优先级来做到这一点。

The prefix 'K' was assigned to the United States  by the International Civil Aviation Organization (ICAO), as it wanted these prefixes to reflect the  geographical location of each airport or airstrip.

前缀“K” 由国际民用航空组织 (ICAO) 分配给美国，因为它希望这些前缀能够反映每个机场或简易机场的地理位置。

However, unlike the continental United States,   which simply adds the K prefix to the IATA airport code, each country, state, or region which  uses the 'P' prefix is assigned a second letter.

然而，与美国大陆不同， 它只是在 IATA 机场代码中添加 K 前缀，每个使用“P” 前缀的国家、州或地区都被分配了第二个字母。

Again, the little clue, here, is that a lot of these words begin with an " r" , so you end up with an " i" double " r" for these ones, so it helps you to remember which prefix to use.

同样，这里的小线索是，这些单词中有很多都以“r” 开头，所以你最终会得到这些单词的“i” 和双“r”，这样它可以帮助你记住要使用哪个前缀。