micrometeor

例句：

1. 1. The micrometeor shower was visible from the telescope.
   从望远镜里可以看到微流星雨。
2. 2. Thespacecraft landed safely on the moon,and scientists collected samples of the micrometeorites.
   宇宙飞船安全着陆在月球上，科学家收集了微流星石样本。
3. 3. The micrometeor showeris a natural phenomenon that occurs every yearduring the winter solstice.
   微流星雨是一种每年冬季冬至期间自然发生的天文现象。