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单词 orbit
释义

WordReference Random House Learner's Dictionary of American English © 2024
or•bit /ˈɔrbɪt/USA pronunciation   n. 
  1. Astronomythe curved path, usually rounded, that a planet, satellite, spaceship, etc., follows around a heavenly body: [countable]a comet with a very irregular orbit.[uncountable; in/into + ~]a spacecraft in orbit.
  2. the area of a nation's or a person's influence:[countable]within England's orbit.

v. 
  1. Astronomyto move or travel around in an orbital or rounded path: [+ object]The satellite orbited the earth.[no object]The moon orbited above the horizon.
  2. Aerospace[+ object] to send into orbit, as a satellite.
or•bit•al /ˈɔrbɪtəl/USA pronunciation  adj. 

WordReference Random House Unabridged Dictionary of American English © 2024
or•bit  (ôrbit),USA pronunciation n. 
  1. Astronomythe curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.
  2. the usual course of one's life or range of one's activities.
  3. the sphere of power or influence, as of a nation or person:a small nation in the Russian orbit.
  4. Physics(in Bohr theory) the path traced by an electron revolving around the nucleus of an atom.
  5. an orb or sphere.
  6. Anatomy
    • the bony cavity of the skull that contains the eye;
      eye socket.
    • Anatomythe eye.
  7. Zoologythe part surrounding the eye of a bird or insect.

v.t. 
  1. Astronomyto move or travel around in an orbital or elliptical path:The earth orbits the sun once every 365.25 days.
  2. Aerospaceto send into orbit, as a satellite.

v.i. 
  1. to go or travel in an orbit.
  • Latin orbita wheel track, course, circuit
  • Middle English 1350–1400
orbit•ar′y, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
orbit /ˈɔːbɪt/ n
  1. the curved path, usually elliptical, followed by a planet, satellite, comet, etc, in its motion around another celestial body under the influence of gravitation
  2. a range or field of action or influence; sphere
  3. the bony cavity containing the eyeball
  4. the skin surrounding the eye of a bird
  5. the hollow in which lies the eye or eyestalk of an insect or other arthropod
  6. the path of an electron in its motion around the nucleus of an atom
vb
  1. to move around (a body) in a curved path, usually circular or elliptical
  2. (transitive) to send (a satellite, spacecraft, etc) into orbit
  3. (intransitive) to move in or as if in an orbit
Etymology: 16th Century: from Latin orbita course, from orbis circle, orb
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