The arm recovery accelerates and the hand drives forward into the water while the opposite hand pushes back achieving maximum hand velocity and propulsion.
当对侧手向后推水，达到最快的划水速度和最大推进力的时候，移臂开始加速，驱动手掌前伸入水。
The arm recovery accelerates and the hand drives forward into the water while the opposite hand pushes back achieving maximum hand velocity and propulsion.
当对侧手向后推水，达到最快的划水速度和最大推进力的时候，移臂开始加速，驱动手掌前伸入水。
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