I heard that the last four letters were dubba-you, ex, why, zee.

最后四个字母是dubba-you，ex，why，zee。

Marsha, these are letters to my family and friends back at home......four letters!

玛莎，这些是给家乡的亲友的信件......四封信！

Four letters in three months and this is the first mention of Kathleen Johns?

三个月来四封信 这是第一封提凯萨琳琼斯的？

They've got a repeating four- letter word ending with two symbols that stand for L.

现在他们找好几个两个一样符号的 四个字母的字。

The code comes out to be a fairly simple alphabet, four letters: A, T, C and G.

这个遗传密码由简的字母表组成，四个字母，A，T，C和G （碱基）。

Can you fit that into your four letter code?

你能把它放入你的四字母代码中吗？

Sometimes three or four letters together can make one sound.

有时三个或四个字母在一起可以发出一个声音。

And it's just a cool four letter word.

这只是一个很酷的四个字母词。

" Fast" has four letters and four sounds.

“快”有四个字母和四个声音。

Ziggy had scrawled four letters across the page.

齐吉在页面上涂鸦了四个字母。

Imagine what it would be like if the English alphabet had four letters.

想象一下， 如果英文字母表有四个字母会是什么样子。

Hey, what's a four- letter word for cut?

嘿, 什么是四字母的切割词?

So all life on this planet is made in ATCGs, the four letters of DNA.

所以这个星球上的所有生命都是由 ATCG 构成的，即 DNA 的四个字母。

Don’t get me too excited because I use four letter words when I get excited.

不要让太兴奋， 因为当兴奋时会使用四个字母的词。

Part four: letters and sounds are not always the same thing.

第四部分：字母和发音并不总是一回事。

We also have another radio station, called " KNBC." Usually radio and television stations have four letters.

们还有另一个广播电台，叫做“KNBC” 。 通常电台和电视台有四个字母。

It was too simple. It had just four basic components, called nucleotides, which was like having an alphabet of just four letters.

它太简了，主要由4个被称为核苷酸的基本物质组成。这就好比一个只有4个字母的字母表。

And then we hear it's on City Road, then the road to the right and we see three, oh actually four letters there.

然后们它在城市路，然后是路的右侧，们看三个，哦，实际上是四个字母。

The call signs in the U.S. all have four letters for the radio and TV stations, or almost all of them.

美国的呼号都是广播电台和电视台的四个字母， 或者几乎全部。

As early as the 1970s, geneticists were transforming the four letters of DNA sequences into tunes that were, well, not exactly chart-topping.

早在 20 世纪 70 年代，遗传学家就将 DNA 序列的四个字母转化为曲调，嗯，并不完全是排行榜上的佼佼者。