Even though these are two different words, the hyphen makes it one word.

即使它们是两个不同的词，连字符使之成为一个单词。

'Ultra' is added to adjectives, using a hyphen but not always.

ultra 被加形容词上，使用连字符，但并不一定总是这样。

If you have used bullets, replace them with hyphens.

如果你用了项目符号，把它们换成连字符。

And we usually write this with a hyphen between 'quick' and 'fire'.

们通“quick”和“fire”之间加上连字符。

That's right. So you write a 'seventy hyphen second' lap. A 'six hyphen foot' man.

是的。所以你要写 seventy-second lap 或者 six-foot man。

So a word like open-minded is joined together by a hyphen.

所以像 open-minded 这个用连字符连接的词。

A hyphen is needed when a unit of measurement acts as an adjective.

当度量单位作为形容词时，要加连字符。

In this week's program, we will explain how to use hyphens to make compound adjectives.

本周的节目中，们将解释如何使用连字符来构成复合形容词。

Notice that the noun form does not use a hyphen.

请注意这种名词形式不加连字符。

In this week's program, we will learn some general rules for creating compound nouns with hyphens.

本周的节目中，们将习用连字符构造复合名词的一些基本规则。

In last week's program, we talked about using hyphens to create a compound adjective.

上周的节目中，们讨论了如何使用连字符来构造复合形容词。

No, hang on. Okay, one word, a letter and a number and... maybe a hyphen. 3D printer.

不，让想想。好吧，一个词、一个字母、一个数字、以及一个连字号吧3D打印机。

Notice that both 15-foot and 10-foot come before the noun and there is a hyphen between the words.

请注意" 有15英尺高的" 和" 有10英尺高的" 都放名词前，并且单词之间有连字符。

You can say a three-week trip and here you don't need an s but you need a hyphen.

你可以说“三周的旅行”，这里你不需要加 s，但是你需要加连字符。

A hyphen is used to combine two or more words together.

连字符用于将两个或多个单词连接一起。

That's right, it has hyphens. Well done if you got those right.

是的，它是用连字符连接的。如果你都答对了就很棒哦。

Do not confuse a hyphen with a longer dash (–).

不要将连字符与较长的破折号（–）混淆。

This hyphen joins these two words and so they count as one word.

连字符把这两个词连接起来，所以它们算作一个词。

We use hyphens with compound nouns so that the sentence is clear and understandable.

们复合名词中使用连字符，这样句子就清晰易懂了。

A hyphen (-) is used to combine two or more words together to create a compound word.

连字符（-）用于将两个或多个单词组合一起以创建复合词。