英语词汇“melatonin”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	melatonin
释义	WordReference Random House Unabridged Dictionary of American English © 2024 mel•a•to•nin (mel′ə tō′nin),USA pronunciation n. [Physiol.] Biochemistry, Physiologya hormone secreted by the pineal gland in inverse proportion to the amount of light received by the retina, important in the regulation of biorhythms: in amphibians, it causes a lightening of the skin. Greek mélā(s) black + tone + -in² 1955–60
随便看	twelvemo twelvemonth twelvemonthly twelve patriarchs twelver twelve step twelve-string guitar twelve-tone twelve-tone row twelve-tone technique twentieth twentieth amendment twenty twenty20 twenty-eight twenty-eighth twenty-fifth twenty-fifth amendment twenty-first twenty-first amendment twenty-five twentyfold twenty-four twenty-fourmo twenty-four-seven

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