In the jacking point, the water flow approximation, the impact force is big, can not meet the flow outside the flow, the defense is difficult.
在顶冲点，水流逼近，冲击力大，无法迎托水流外移，防守困难。
In the jacking point, the water flow approximation, the impact force is big, can not meet the flow outside the flow, the defense is difficult.
在顶冲点，水流逼近，冲击力大，无法迎托水流外移，防守困难。
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