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

双音是两个音组合，产生一个音。

A schwa is a really reduced vowel sound.

即弱化音。

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

重新开，为他们觉得连两个音太不清楚了。

So it's almost like a vowel sound.

所以它（helphe部分）几乎就像一个音(/e/)。

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

请注意在美式英语里他们是data，音不同。

It's the 'i' as in 'sit' vowel sound.

就像‘sit’这个词‘i’发音。

That's how I like to compare vowel sounds.

我喜欢用这样方式比较音。

This one has a very difficult vowel sound which lots of people hate.

这个单词有一个很多人都讨厌很难发音音。

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

在" can’t" 发音时，音从来不弱。

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

不发音可以是音，也可以是辅音或是整个音节。

Now here are some words which have this vowel sound.

这里有一些含有这个音单词。

This is one of the long vowel sounds.

这是一个长音。

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

这个音和其它音发音不太一样。

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

其它音只有一种口型，例如[i]。

Diphthongs are normally made up of two vowel sounds.

双音通常由两个音组成。

Or you can also drag out the vowel sound in 'like' while you're thinking.

或者是在思考时候，你们可以拉长 ‘like’ 里面音。

So technically here I'm linking two vowel sounds together.

严格地说，我在将两个辅音连起来。

So they should at least have the same vowel sound, right?

它们至少音应该相同，对吧？

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

这是一个双音，它是一个音，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）音。