5-methylcytosine　是什么意思_5-methylcytosine　用英语怎么说_5-methylcytosine　的翻译_5-methylcytosine　翻译成_5-methylcytosine　的中文意思_5-methylcytosine　怎么读,5-methylcytosine　的读音,5-methylcytosine　的用法,5-methylcytosine　的例句