When you put two words together, the sound changes.

当你把两个词放在一起时，发音会变化。

In American English the O sound changes a bit. It's Peroni.

在美式英语中，O 音稍有变化：Peroni。

You want to feel a difference here and to hear the sound changes.

你要感受这里的不同，并听到声音的变化。

This is an example of how sounds change in everyday speech - and it's called assimilation.

这个例子表明了发音在日常交谈中是怎么变化的——这种叫语音同化。

In the process, we also leave out some letters and the vowel sounds change a little.

在这个过程中，我们也省略了一些字母，元音听起来也会有一些变化。

The good news is the way that sounds change in spoken English is not completely random.

好消息是英语口语中发音的改变并不是完全随意的。

Words that are almost the same except this one sound and that one sound changes the meaning.

除了这两个字母发音的区别，它们基本上发音相同，而发音的这些小改变也就改变了它们的意思。

Viewers can see all around them and even hear the sounds change as they turn their heads.

观赏者可以无死角地欣赏周围所有景色，甚至当他们转头时，都可以听到声音的变化。

But comparative linguistics can help is by focusing on grammatical structure patterns of sound changes and certain core vocabulary.

但从比较语言学家可以从语法的结构来帮忙，研究发音的变更和一些核心词汇。

So, the " a" vowel sound changes.

所以，“a”的元音变了。

So that might be your first sound change.

所以这可能是你第一次改变声音。

So, the vowel sound changes, here.

所以，元音在这里发生了变化。

This is very confusing because sometimes the sound changes the meaning changes.

这非常令人困惑， 因为有时声音会改变， 意思也会改变。

Towards the end of Middle English, English underwent a couple of sound changes.

在中古英语末期，英语经历了几个音变。

But have you ever noticed that the pitch of the sound changes, too?

但是你有没有注意到 音高也变了？

It doesn't reduce, none of the sounds change.

它不会减少，任何声音都不会改变。

Let's look at some sound changes for the Brooklyn accent.

让我们看看布鲁克林口音的一些声音变化。

This means a sound changes or is dropped.

这意味着声音发生变化或被丢弃。

So, this one, the vowel sound changes: " e" , " eh" .

所以，这一个，元音变了：“e”，“eh”。

None of the sounds change so it doesn't reduce, but it's pretty different from the stressed version.

没有任何声音发生变化， 因此它不会减少，但它与重音版本有很大不同。