A diphthong is a combination of two vowels which creates one vowel sound.

双是两个的组合，产生一个。

Restart their voice because they feel like linking two vowel sounds is too unclear.

重新开始读，因为他们觉得连读两个太不清楚了。

So it's almost like a vowel sound.

所以它（help中he的部分）几乎就像一个(/e/)。

Note that in American English, they say data, so the vowel sound is different.

请注在美式英语里他们读的是data，不同。

" I" is a vowel sound, so it's " thee Irish Sea, the Irish Sea" .

“I”是，所以是“thee Irish Sea, the Irish Sea”。

That's how I like to compare vowel sounds.

我喜欢用这样的方式比较。

Any vowel sound we can use this schwa sound.

任何都可以读成这个弱。

It's the most commonly used vowel sound in British English.

它是英式英语中最常用的。

In " can't, " the vowel sound is never reduced.

在" can’t" 发时，从来不弱读。

Fantastic. Thanks enough, thank you. And now some long vowel sounds?

太棒了。非常感谢。那长呢？

It can be a vowel sound, a consonant sound, a whole syllable.

不发的可以是，也可以是辅或是整个节。

Now here are some words which have this vowel sound.

这里有一些含有这个的单词。

But in terms of pronunciation, there are actually 25 vowel sounds.

但就发而言，实际上有25个发。

And this is one of the long vowel sounds.

这是一个长。

This sound is a little different from all of the other vowel sounds.

这个和其它的发不太一样。

Other vowel sounds have one mouth position, ee, for example.

其它只有一种口型，例如[i]。

Diphthongs are normally made up of two vowel sounds.

双通常由两个组成。

So long vowel sounds and short vowel sounds are important in English.

所以长和短在英语中是很重要的。

It's a diphthong, it's a vowel sound that starts ahh and ends up ee.

这是一个双，它是一个，以 ahh 开头，以 ee 结尾。

However, it's a vowel sound that's used in many grammar words like articles and prepositions.

然而，它却是很多语法词（比如冠词和介词）中的。