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......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.

现在他们找到好几个两个一样符号的 四个的。

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

我听到最后四个是dubba-you，ex，why，zee。

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

这个遗传密码由简单的组成，四个，A，T，C和G （碱基）。

" Fast" has four letters and four sounds.

“快”有四个和四个声。

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

想象一下， 如果英文有四个会是什么样子。

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四个的单词。

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

那是一个大多数人不喜欢的四个的词。

And it's just a cool four letter word.

这只是一个很酷的四个单词。

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

所以我们需要四个单词来达的，法语只需要四个就能搞定。

Four letters four words. Four letters four words.

四个四个词。四个四个词。

Takeaway four, letter writing is a hobby.

第四点，写信是一种爱好。

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

前四个S-E-A-M单独使用时，构成一个名词。

Can you fit that into your four letter code?

你能把它放入你的四代码中吗？

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。

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

嘿, 什么是四的切割词?

Ziggy had scrawled four letters across the page.

齐吉在页面上涂鸦了四个。

Sometimes three or four letters together can make one sound.

有时三个或四个在一起可以出一个声。

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四个。