In this American English pronunciation video,

在这段美式英语发音视频中，

we're going to go over the difference between the words 'staff' and 'stuff'.

我们将讨论单词“staff”和“stuff”之间的区别。

I have several videos comparing vowels, but in this video, we're going to compare two different words.

我有几个视频比较元音，但在这个视频中，我们要比较两个不同的单词。

Thanks to the fan who suggested this topic.

感谢提出这个话题的粉丝。

These two words, 'staff' and 'stuff', are a minimal pair.

这两个词“staff”和“stuff”是对立最小的一对词。

A minimal pair is a set of two words where only one sound is different.

对立最小的一对词，是只有一个发音不同的两个单词。

'Staff' has the 'aa' as in 'bat' vowel, and 'stuff' has the 'uh' as in 'butter' vowel.

“Staff”中的“aa”和“bat”中的元音一样，“stuff”中的“uh”和“butter”中的元音一样。

For the 'aa' vowel, the jaw drops quite a bit, and the tongue raises in the back.

对于“aa”元音，下巴会降下很多，舌头会在后面抬起。

That means you should be able to see a lot of tongue.

这意味着你应该能看到大部分舌头。

Aa, aa.

Aa、Aa。

Also, the corners of the mouth may pull up and out a bit, exposing some of the top teeth, aa, aa.

此外，嘴角可能会向上、向外拉一点，露出上部的一些牙齿，aa、aa。

The 'uh' as in 'butter' vowel has relaxed lips and a relaxed tongue.

“butter”元音中的“uh”音，要放松嘴唇和舌头。

It's a stressed syllable in both 'butter' and 'stuff', so the jaw will drop a little,

“butter”和“stuff”都是重读音节，所以下巴会稍微降下，

but the lips should be completely relaxed, stu-, stuff.

但嘴唇应该完全放松，stu-，stuff-，

And the tongue, too. Stuff.

舌头也放松。Stuff。

Let's take a look at these two words in slow motion.

让我们用慢镜看一下这两个词。

Please put any questions and suggestions for videos in the comments.

请在评论中留下对视频提出的问题和建议。

That's it, and thanks so much for using Rachel's.

这期节目就到这里了，非常感谢你们收看《瑞秋纯正美式发音视频》。