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  1. systole

    • IPA[ˈsɪstəli]

    英式

    • n.
      the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries.
    • noun: systole, plural noun: systoles

    • 更多解釋
    • IPA[ˈsistəlē]

    美式

    • n.
      the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers ...

    Oxford American Dictionary