serotonin
noun /ˌserəˈtəʊnɪn/
/ˌserəˈtəʊnɪn/
[uncountable]- a chemical in the brain that affects how messages are sent from the brain to the body, and also affects how a person feels
5–羟色胺,血清素(神经递质,亦影响情绪等) - the feel‐good hormone serotonin
感觉良好的荷尔蒙血清素 - serotonin—the happiness hormone
血清素——快乐荷尔蒙
词源1940s: from serum + tonic + -in. - the feel‐good hormone serotonin