The code consists of combinations of four simple units, called bases, named adenine (A), thymine (T), cytosine (C) and guanine (G).是什么意思_The code consists of combinations of four simple units, called bases, named adenine (A), thymine (T), cytosine (C) and guanine (G).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句