They can be represented by the letter codes A, T, C and G.

这些分子分别用字母A、T、C和G来代表。

DNA is the letters that make up genes, A, T, C, and G.

DNA 是组成基因 A，T，C 和 G 的字母。

He'll need a c. t. to rule out intracerebral hemorrhage, contusion or cerebral edema.

他需要CT 来去除大脑内出血擦伤或者脑浮肿。

In the language of A, T, C, and G, we find the story of life itself, a story that we are just beginning to decipher.

在A、T、C、G的语言中，我们找到了生命本身的故事，一个我们刚刚开始解读的故事。

RNA is complimentary to DNA though, so if an RNA strand has a nucleotide sequence 3' - A A G U C C A G U - 5', then the complimentary DNA or cDNA would be 5' - T T C A G G T C A - 3'.

但RNA与DNA之间互补，所以如果一条RNA链拥有如下核苷酸序列：3' - A A G U C C A G U - 5'，那么与之互补的DNA便是5' - T T C A G G T C A - 3'。