Avoiding the pain of pulling a muscle in the groin area means you'll be able to swim breaststroke better and faster and without fear.
Avoiding the pain of pulling a muscle in the groin area means you'll be able to swim breaststroke better and faster and without fear.
你(掌握了这个技能后，或者说是通过这个练习)可以避免腹股沟的拉伤，而且对蛙泳泳姿及泳速有帮助。