planetoid

例句：

1. 1. The starry sky was filled with the twinkling of countless planetoids.
   繁星点点的夜空中，无数星状物闪烁着。
2. 2. The astronomers were puzzled by the sudden appearance of a planetoid in their telescope.
   天文学家们对望远镜中出现的一个星状物的突然出现感到困惑。
3. 3. The planetoid's origin is still a mystery to scientists.
   这个星状物的来历仍然是科学家的一个谜。