当电子从云层底部涌向地面时，通道就开始形成了。
The formation of the channel is initiated when electrons surge from the cloud base toward the ground.
他们跳起来，握紧拳头，发出长长的尖叫声，抓向地面或空中。
They leap to their feet, clench fists and let out long screams, clawing at the ground and air.
当你快速向地面移动时，你就会跌倒。
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