🔍 牛津詞典 🎯
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典

檢索以下詞典:
(Mr. Ng 不推薦使用 Google 翻譯!)
最近搜尋:
BNC: 0 COCA: 20581

melatonin

noun
/ˌmeləˈtəʊnɪn/
/ˌmeləˈtəʊnɪn/
[uncountable] (biology生物)
jump to other results
  1. 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)褪黑(激)素
    Word Origin1950s: from Greek melas ‘black’ + serotonin.

👨🏻‍🏫 Mr. Ng 牛津詞典 📚 – oxford.mister5️⃣.net
切換為繁體中文
Site Uptime