完成一倍有效流水怎么算

简介：The enemy and we were waving their weapons indiscriminately and frantically greeting each other. The sound of weapons clashing, the neighing of war horses, the sound of shouting and charging, the sound of sharp blades piercing flesh, and the sound of artillery bombarding the earth from time to time. All the sounds were intertwined, making The human eardrums are roaring, making it impossible to hear sounds three steps away.