satellite

satellite
noun

(亦作 artificial satellite)an artificial body placed in orbit round the earth or another planet in order to collect information or for communication
人造地球卫星，人造卫星
■[as modifier]transmitted by satellite; using or relating to satellite technology
卫星传送的；使用卫星技术的；与卫星技术有关的
satellite broadcasting.
卫星广播。
■[mass noun]satellite television
卫星电视
a news service on satellite.
卫星电视新闻节目。
The first artificial satellite, Sputnik I, was launched by the USSR on 4 October 1957. Over 5,000 satellites have since been launched into earth orbit and several hundred are still operational. Many of them provide observation or remote sensing of the earth's surface, for military or meteorological purposes, or for research into mineral resources, land use, etc. Others act as relays for telephone and microwave communications, or for the broadcasting of television and radio, or provide precise coordinates for air, sea, and land navigation. A number of satellites carry instruments for astronomical observation at various electromagnetic wavelengths, unhindered by the earth's atmosphere
(Astronomy)a celestial body orbiting the earth or another planet
(天文)卫星
[usu. as modifier]something that is separated from or on the periphery of something else but is nevertheless dependent on or controlled by it
在某物外围并从属于它的
satellite offices in London and New York.
设在伦敦和纽约的分部。
■a small country or state politically or economically dependent on another
卫星国，附庸国
■a community or town dependent on a nearby larger town
卫星城镇，卫星社区
(Biology)a portion of the DNA of a genome with repeating base sequences and of different density from the main sequence
(生)随体DNA

satellitic
[-ˈlɪtɪk]
adjective
satellitism
noun
语源

mid 16th cent. (in the sense 'follower, obsequious underling'): from French satellite or Latin satelles, satellit- 'attendant'

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