aero·nau·tics /ˌærəˈnɔtɪks, ˌɛr, ˈnɑ-/
  航空學,航空術
  aeronautics
  航空
  A·ër·o·naut·ics n. The science or art of ascending and sailing in the air, as by means of a balloon; aërial navigation; ballooning.
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  aeronautics
       n : the theory and practice of navigation through air or space
           [syn: astronautics]