单词：asteroids
asteroids的用法和样例：
例句
- The debris from the colliding asteroids fell to the Earth.小行星间碰撞后崩落的碎片落入地球。
- Asteroids are leftover scraps of planetary material.小行星是行星物质的残余废坯。
- Echinoids are close relatives of the Asteroids.海胆是海星的近亲。
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