asteroid

🇬🇧/ˈæstərɔɪd/ 🇺🇸/ˈæstərɔɪd/

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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}

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。

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。

-aster- asteroid n. 小行星；海星（aster+oid“像…的”，“似…的”）

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