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  1. serotonin

    • IPA[ˌsɛrəˈtəʊnɪn]

    英式

    • n.
      a compound present in blood platelets and serum, which constricts the blood vessels and acts as a neurotransmitter.
    • noun: serotonin, plural noun: serotonins

    • 更多解釋
    • IPA[ˌsirəˈtōnən]

    美式

    • n.
      a compound present in blood platelets and serum, which constricts the blood vessels and acts as ...

    Oxford American Dictionary

  2. 知識+