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词汇 trypto-phan
释义 trypto-phan 英t'rɪptəʊf'æn美t'rɪptəʊf'æn
基本英英
色氨酸¹⁰⁰

名词 tryptophan:
an amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin
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