ground discharge

例句：

1. 1. Ground discharge is a common cause of power outages in rural areas.
   地面放电是农村地区常见的停电原因。
2. 2. During thunderstorms, ground discharge can lead to dangerous electrical sparks.
   雷暴期间，地面放电可能导致危险的电火花。
3. 3. The engineers were monitoring the ground discharge during the construction of the new substation.
   工程师们在新变电站的建设过程中监测着地面放电。