Then, using a technology called the Sanger method, each piece was sequenced letter by letter.

随后，他们运用“桑格测序法” （注：双脱氧链终止法）将每个片段内的碱基进行逐一测序 （即A, T, C, G）。

NANOG, like every gene, is copied, from DNA into RNA, letter by letter, before that RNA is used to build a protein.

在 RNA 用来合成蛋白质之前，NANOG 像每个基因那样从DNA 逐个碱基转录成 RNA。

If you do not find the words ready-made, have the patience to form them letter by letter.

如果您找不到现成的单词， 请耐心地逐个字母地拼写它们。

In the first place, language as you know it is a slow affair: letter by letter strung out to make a word, and words to make a sentence, the result of a linear thought pattern.

首先，正如你所知，语言是一件缓慢的事情：一个字母一个字母串起来组成一个词，一个个词组成一个句子，这是线性思维模式的结果。