来自拉丁语orbis,圈，环，球体，词源同orb.引申词义轨道。

orbit

orbit: [16] Orbit comes from Latin orbita. This was a derivative of the noun orbis, which originally meant ‘circle, disc’. It was applied metaphorically to a number of circular things, including the ‘circular path of a satellite’ (from which the main meaning of orbit comes) and also the ‘eye socket’, and eventually came to be applied to ‘spheres’ as well as ‘circles’ – whence English orb [16].
=> orb

orbit (n.)

late 14c., "the eye socket," from Old French orbite or directly from Medieval Latin orbita, transferred use of Latin orbita "wheel track, beaten path, rut, course, orbit" (see orb). Astronomical sense first recorded 1690s in English; it was in classical Latin, revived in Gerard of Cremona's translation of Avicenna. The Old English word for "eye socket" was eaghring.

orbit (v.)

1946, from orbit (n.). Related: Orbited; orbiting.

1. 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。

来自柯林斯例句

2. Yet bigger satellites will be sent up into orbit.

更为大型的卫星将被送入轨道。

来自柯林斯例句

3. The orbit of this comet intersects the orbit of the Earth.

这颗彗星的轨道与地球的轨道交叉。

来自柯林斯例句

4. the earth's orbit around the sun

地球环绕太阳的轨道

来自《权威词典》

5. The space rocket was launched and went into orbit.

宇宙火箭发射后进入轨道.

来自《简明英汉词典》