The collision of submarine structure under water is a main accident form and one of the most dangerous states for ship collision.
潜艇结构水下碰撞是潜艇的主要事故形式，也是船舶碰撞最为危险的状态之一。
Though people have taken a lot of measures, the collision accident of ship happens repeatedly.
虽然人们采取了很多措施，但船舶碰撞事故还是屡屡发生。
Though people have taken a lot of measures, the collision accident of ship happens repeatedly.
虽然人们采取了很多措施，但船舶碰撞事故还是屡屡发生。
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