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N-COUNT
(天体等运行的)轨道
An orbit is the curved path in space that is followed by an object going round and round a planet, moon, or star.
例句
Mars and Earth have orbits which change with time...
火星与地球的运行轨道随着时间而变化。
The planet is probably in orbit around a small star.
这颗行星可能正环绕着一颗小恒星运行。
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VERB
环绕…的轨道运行
If something such as a satellite orbits a planet, moon, or sun, it moves around it in a continuous, curving path.
例句
In 1957 the Soviet Union launched the first satellite to orbit the earth.
1957年,苏联发射了第一颗绕地卫星。
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N-SING
(影响所及的)范围,领域,圈子
The orbit of a particular person, group, or institution is the area over which they have influence.
例句
In the late 1970s Laos fell within the orbit of Vietnam and the Soviet Union.
20世纪70年代末,老挝被纳入了越南和苏联的势力范围。