ball lightning

例句：

1. 1.Ball lightning is a rare and mysterious natural phenomenon that occurs when a cloud of electricity forms around a ball of ice or snow.
   球状闪电是一种罕见的神秘自然现象，当一个云团围绕冰或雪的球体形成电流时发生。
2. 2. In the early 20th century, scientists first observed ball lightning in Antarctica, where it was believed to be caused bythe interaction between the Earth's magnetic field and the atmosphere.
   在20世纪初，科学家们首次在南极洲观察到了球状闪电，当时人们认为它是地球磁场与大气层相互作用的结果。
3. 3. Ball lightninghas been known to occur in remote areas with high altitudes and thin air, such as mountain ranges and deserts, making it difficult for observers to witness.
   已知球状闪电发生在高海拔和稀薄空气的偏远地区，如山脉和沙漠，这使得观察者难以目睹其发生。