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RNA

noun
🔊/ˌɑːr en ˈeɪ/
🔊/ˌɑːr en ˈeɪ/
 [uncountable] (chemistry化学)
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  1. a chemical present in all living cells; like DNA it is a type of nucleic acid核糖核酸Topics Physics and chemistryc2, Biologyc2
    Oxford Collocations DictionaryRNA is used before these nouns:
    • sample
    See full entry
  2. Royal Neighbors of America