请问planet和comet的英文解释是什麽呢

comet: [ 'kɔmit ] n. 慧星词形变化: 形容词:cometary 例句与用法:

1. Comets move around the sun like planets, but in long oval course. 彗星象行星一样绕太阳运转，然而其轨道呈狭长的椭圆形。

2. A comet is at perihelion when it is closest (=very close) to the sun. 彗星最接近太阳时，它就是在近日点。

3. If I had binoculars, I could see that comet clearly. 如果我有望远镜，我就可以清楚地看见那颗彗星。

4. Their memory wasn't very good when it came to recalling other things, but they remembered the comet.