The bright return stroke travels upward at around half the speed of light, and is too fast to capture in more than one image.
闪亮的回击以光速的一半速度上行传播，由于它的速度太快，在一张图象中不能捕捉到这一过程。
The lightning branches out in many different directions, causing one leader to make a connection with the ground, creating a bright return stroke.
闪电在许多不同的方向长出分叉，激发了一个先导与地面连接，制造了一次闪亮的回击。
The lightning branches out in many different directions, causing one leader to make a connection with the ground, creating a bright return stroke.
闪电在许多不同的方向长出分叉，激发了一个先导与地面连接，制造了一次闪亮的回击。
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