This observation suggests the existence of a more rudimentary precursor, such as a doublet code employing only 10, rather than 20, amino acids.是什么意思_This observation suggests the existence of a more rudimentary precursor, such as a doublet code employing only 10, rather than 20, amino acids.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句