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-现代词典

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	southwell southwest south west africa south-west africa southwest by south southwest by west southwester southwesterly southwestern southwesterner southwestward southwestwardly south whittier south windsor south yemen south yorkshire soutine soutter souvanna phouma souvenir souvenir sheet souvlaki sou'wester sovereign sovereignly

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