The first sound is the Y consonant.

第一个音是辅音Y。

That's the first heart sound, or S1.

这就是第一心音，或者S1。

Be really careful with that first R sound, frustrate.

请一定注意第一个r的发音，frustrate。

Oh, nearly. But the first vowel sound is ai.

噢，几乎读对了。但是第一个元音的读音是 ai。

Whatever you do, you need a sound body first of all.

无论做什么事，健康的身体是基本条件。

The first sound is the one produced by the consonant R.

第一个音由辅音 r 产生。

My trumpet will be the first sound she hears. I will be irresistible.

我的小号声将是她醒来后听到的第一种声音。我将是难以抗拒的。

Try to pronounce the second sound immediately after you release the first sound.

试着在发出第一个声音后 立即发出第二个声音。

Now if the first sound is an 'e' sound then we hear a 'y' sound.

如果第一个音是“e”音，那么我们就会听到“y”音。

The first sound is the 'a' as in 'cat' and then it's a 'k' sound.

第一个音是“cat”中的“a”音，然后是“k”音。

The first sound in hour is a vowel sound, so we say an hour.

Hour 的第一个音是元音，所以我们会说 an 小时。

It depends on the first sound in the next word, not the letter but the sound.

它取决于下一个单词的第一个音，不是字母而是发音。

So the first sound that we hear in the word hour is a vowel sound.

所以我们在小时这个词中听到的第一个音是元音。

In the case of Hey Siri, the first sounds it listens for is not hey, it's S.

在 Hey Siri 的例子中，它听到的第一个音不是 Hey，而是 S。

These are all Viking words. But somehow we have lost the first sounds, and now they are silent.

这些全是维京字。不过不知道为什么我们失去了第一个音，现在它们是不发音的。

How we adapted the first sounds we made into language is now being revealed for the first time.

人类是如何把最初的声音变成语言的，这个问题直到现在才被提出。

The first sound is " ch" , " ch" .

第一个音是“ch”、“ch”。

The first sound is the AA as in BAT vowel.

第一个音是 BAT 元音中的 AA。

So that might be your first sound change.

所以这可能是你第一次改变声音。

When I say it, the first vowel sound is much more relaxed.

当我说的时候，第一个元音就轻松多了。