meteor radar

例句：

1. 1. The meteor radar detected a small asteroid approaching Earth.
   流星雷达探测到一个小型小行星正在接近地球。
2. 2.The meteor radar helped scientists to study the behavior of meteors.
   流星雷达帮助科学家研究流星的行为。
3. 3. The meteor radar was used to track the trajectory of the falling meteorite.
   流星雷达被用来追踪陨石的下落轨迹。