orbit /ˈɔːbɪt/ star2 CET4 TEM4 (orbiting,orbited,orbits)

• 1.  

  N-COUNT（可数名词） An orbit is the curved path in space that is followed by an object going around and around a planet, moon, or star. (天体运行的) 轨道 [also 'in/into' N]

  例：

  Mars and Earth have orbits which change with time.

  火星和地球的轨道随着时间而发生改变。

• 2.  

  V-T（及物动词） If something such as a satellite orbits a planet, moon, or sun, it moves around it in a continuous, curving path. 环绕…的轨道运行

  例：

  In 1957 the Soviet Union launched the first satellite to orbit the earth.

  1957年，苏联发射了第一颗环绕地球运行的人造卫星。