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

玛莎，这些是给我家乡的亲友的信件......封信！

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

三封信 这是第一封提到凯萨琳琼斯的？

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

现在他们找到好几两一样符号的 字母的字。

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

我听到最后字母是dubba-you，ex，why，zee。

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

这遗传密码由简单的字母组成，字母，A，T，C和G （碱基）。

" Fast" has four letters and four sounds.

“快”有字母和声音。

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

想象一下， 如果英文字母有字母会是什么样子。

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

不要让我太兴奋， 因为当我兴奋时我会使用字母的单词。

And that's one four letter word that most people don't like.

那是一大多数人不喜欢的字母的词。

And it's just a cool four letter word.

这只是一很酷的字母单词。

So what we require four words for, French manages with four letters.

所以我们需要单词达的，法语只需要字母就能搞定。

Four letters four words. Four letters four words.

字母词。字母词。

Takeaway four, letter writing is a hobby.

第点，写信是一种爱好。

The first four letters, S-E-A-M, when used on their own, form a noun.

前字母S-E-A-M单独使用时，构成一名词。

Can you fit that into your four letter code?

你能把它放入你的字母代码中吗？

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

所以这星球上的所有生命都是由 ATCG 构成的，即 DNA 的字母。

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

嘿, 什么是字母的切割词?

Ziggy had scrawled four letters across the page.

齐吉在页面上涂鸦了字母。

Sometimes three or four letters together can make one sound.

有时三或字母在一起可以发出一声音。

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

我们还有另一家广播电台，叫做“KNBC” 。 通常广播和电视台的呼号有字母。