asteroid
n. 小行星；海星
adj. 星状的；类似海星的
复数 asteroids
例句
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。
《柯林斯英汉双解大词典》
Scientists were debating whether an asteroid was about to hit the Earth.
科学家们在争论一颗小行星是否要撞上地球。
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。
