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  1. escape velocity

    • IPA[əˈskāp vəˌläsədē]
    • n.
      the lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.
    • noun: escape velocity, plural noun: escape velocities

    • 更多解釋
    • n.
      the lowest velocity which a body must have in order to escape the gravitational attraction of a ...

    Oxford Dictionary