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  1. thermosphere

    • IPA[ˈθəːməsfɪə]

    英式

    • n.
      the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.
    • noun: thermosphere, plural noun: thermospheres

    • 更多解釋
    • IPA[ˈTHərməˌsfir]

    美式

    • n.
      the region of the atmosphere above the mesosphere and below the height at which the atmosphere ...

    Oxford American Dictionary