Read Edit View history 松果体素 sōngguǒtǐsù melatonin Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 松果体素/ 松果體素 sōngguǒtǐsù melatonin (biochemistry) melatonin 松果体素有助于提高睡眠质量。 Edit Delete References Add reference No references for this word.