comet的英文解释麻烦1下

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.
一谈到别的事情时,他们的记性并不是很好,但他们却记得彗星.

彗星