退黑激素

tuì hēi jī sù

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Definitions

1. melatonin

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Child Words of 退黑激素

• 激素 激素 jī sù: hormone
• 素 素 sù: raw silk
• 退 退 tuì: to retreat; to withdraw
• 黑 黑 hēi: black
• 激 激 jī: to arouse