noun🔗Share嘧啶 A diazine in which the two nitrogen atoms are in the meta- positions; it is the basis of three of the bases found in DNA and RNA: thymine, uracil and cytosine"In biology class, we learned that cytosine, thymine, and uracil, three important building blocks of DNA and RNA, are all types of pyrimidine bases. "在生物课上，我们学到胞嘧啶、胸腺嘧啶和尿嘧啶这三种DNA和RNA的重要组成部分，都属于嘧啶碱基。biochemistrybiologychemistrycompoundChat with AIVocabulary GamePractice Reading
