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	melatonin noun /ˌmeləˈtəʊnɪn/ /ˌmeləˈtəʊnɪn/ [uncountable] (biology) jump to other results a hormone that helps regulate (= control) waking and sleeping in humans and animals, and which is sometimes used to treat insomnia (= the condition of being unable to sleep) Word Origin1950s: from Greek melas ‘black’ + serotonin.
随便看	terpsichorean terrace john-doe John Donne john-donne John Dory john-dory John Dos Passos John Dowland John D Rockefeller john-d-rockefeller John Dryden john-dryden John Evelyn John Everett Millais john-everett-millais John F Kennedy john-f-kennedy John Fletcher john-fletcher John Ford john-ford John Foster Dulles john-foster-dulles John Fowles

英语词典包含84843条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。