There is a return stroke after the lightning hits the ground.
在闪电击向地面以后出现了一次回击。
Eventually a negative stepped leader travels downward and reaches the ground, creating a return stroke.
最终一个下行传播的负极梯形先导接触到地面，制造了一次回击。
There are some differences for the mean of return stroke currents in different regions.
不同地区地闪回击电流平均值略有不同。
There are some differences for the mean of return stroke currents in different regions.
不同地区地闪回击电流平均值略有不同。
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