Sometimes, however, a stream of electrons following an established channelis met by a positive stream making a new path up from the ground.
然而，有时，沿着已建立的通道的电子流会遇到正的电子流，正的电子流从地面开始形成新的路径。
2
The formation of the channelis initiated when electrons surge from the cloud base toward the ground.
当电子从云层底部涌向地面时，通道就开始形成了。
3
The channelis only a few centimeters in diameter, but that is wide enough for electrons to follow the channel to the ground in the visible form of a flash of lightning.