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purin ['pjuərin] n
gen. 嘌吟; 尿; 四氮杂茆
purin Any of a number of nitrogenous bases, such as guanine and adenine, that are derivatives of purine and constituents of nucleic acids and certain coenzymes ['pjuərin] n
environ. 嘌呤 (某种含氮碱基,例如腺嘌呤和鸟嘌呤,它们是嘌呤的衍生物并且是核酸和特定辅酶的组成部分。)