melatonin

US //mel.əˈtoʊ.nɪn//

UK //mel.əˈtəʊ.nɪn//

B1 中級
n. (u.)不可數名詞褪黑激素
Both pineal and lateral eyes are needed to sustain daily circulating melatonin rhythms in sea bass.
n. (u.)不可數名詞褪黑激素補充劑
Many people take melatonin supplements to combat jet lag.

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