这是一个伟大的选择继续你的蛙式踢腿，如果你酸痛，或准备快速蛙泳。
This is a great option to continuing to work your breaststroke kick if you're sore, or to get ready for fast breaststroke.
这是一个伟大的选择继续你的蛙式踢腿，如果你酸痛，或准备快速蛙泳。
This is a great option to continuing to work your breaststroke kick if you're sore, or to get ready for fast breaststroke.
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