详细解释:n. 彗星
词型变化：
形容词:cometary英语解释：
名词 comet:
(astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit例句：
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。