When the step leader is close to the ground, a positive " streamer" reaches up to meet it.

当先行者接近地面时，一条积极的“飘带”就会伸出来迎接它。

Chapter 4: The Climactic Discharge Once the electrical tension surpasses the air's breakdown voltage, a path of ionized air, called a " step leader, " descends from the cloud.

第四章：高潮放电 一旦电压超过空气的击穿电压，一条被称为“先导”的电离空气路径就会从云中下降。