名词

1. We can see comets only when they come close to the earth.
只有当彗星接近地球时，我们才能看得见它们。

1. 科密：科密(Comet)碎纸机C-838, 科密(Comet)碎纸机C-868, 科密(Comet)碎纸机C-988, 科密(Comet)碎纸机S-368办公设备, 碎纸装订设备, 国产碎纸机, 科密 ( Comet ) 碎纸机C-838办公设备, 碎纸装订设备, 国产碎纸机,

2. comet：computer operated management evaluation technique; 计算机操作的管理鉴定技术

3. comet：computerized message transmission; 计算机化报文传输

1. 彗星
A comet is a bright object with a long tail that travels around the sun.

e.g. Halley's Comet is going to come back in
2061.
哈雷彗星将于2061年回归。

noun

1. (astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit