单词：melatonin
melatonin的用法和样例：
例句
- But the amount of melatonin in milk is small.但牛奶中的褪黑激素含量很少。
- He said sildenafil worked at least as well as melatonin, a jet-lag treatment.他还认为昔多芬的作用至少和目前用于治疗时差综合症的退黑激素的作用类似。
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脑白金到底是什么？ 褪黑素，又名黑素细胞凝集素，俗称为脑白金，是存在于从藻类到人类等众多生物中的一种荷尔蒙，它在生物中的含量水平随每天的时间变化而变化。 Melatonin, sometimes ca
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