return stroke

基本解釋

A stepped leader forms a connection making a return stroke with a rapid re-brightening of the channel.
一個梯形先導形成了一次與地面連接，在連接中造成了一次回擊，這次回擊中還快速地重新點亮了通道。
Eventually a negative stepped leader travels downward and reaches the ground, creating a return stroke.
最終一個下行傳播的負極梯形先導接觸到地面，制造了一次回擊。
The lightning branches out in many different directions, causing one leader to make a connection with the ground, creating a bright return stroke.
閃電在許多不同的方向長出分叉，激發(fā)了一個先導與地面連接，制造了一次閃亮的回擊。

Could he return us to gold with the stroke of a pen?
FORBES: Steve Forbes Predicts a Return to the Gold Standard Within Five Years