单词：nucleinic acid
nucleinic acid的用法和样例：
例句
- DNA and RNA are both types of nucleic acid.脱氧核糖核酸和核糖核酸是两种类型的核酸。
- The capsid together with the enclosed nucleic acid is the nucleocapsid.衣壳同包围它的核酸一起称为核衣壳。
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