asteroid
🇬🇧/ˈæstərɔɪd/ 🇺🇸/ˈæstərɔɪd/📚 6267 38 1托福An asteroid is one of the very small planets that move around the sun between Mars and Jupiter. (火星和木星间运行的)小行星
noun [具体名词]小行星；海星
There is an asteroid on a collision course with the Earth.有个小行星正处于可能与地球发生碰撞的航向上。
adjective [原级]星状的；类似海星的
The largest asteroid is Ceres, which is about a quarter the size of the moon.最大的小行星是谷神星，其体积大约是月球的四分之一。
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