| 单词 | melatonin |
| 释义 | melatonin (once / 81513 pages) n WORD FAMILY melatonin USAGE EXAMPLESThe melatonin I purchased is hard to administer. Washington Post(Dec 16, 2016) Experts say changing levels of the brain chemicals melatonin and serotonin, which plays a role in our mood and how we sleep, triggers the depression. Washington Times(Dec 14, 2016) Exposure to sunlight prevents the brain from producing melatonin and other natural soporifics. Science Magazine(Nov 23, 2016) n hormone secreted by the pineal gland Hyper endocrine, hormone, internal secretion the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect |
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