serotonin
US /ˌse.rəˈtoʊ.nɪn/
UK /ˌse.rəˈtəʊ.nɪn/
名词
血清素, 5-羟色胺
a compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter, often associated with feelings of well-being and happiness
示例:
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Exercise is known to increase the levels of serotonin in the brain.
众所周知，运动可以提高大脑中血清素的水平。
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Low levels of serotonin are often linked to depression.
低水平的血清素通常与抑郁症有关。