1 00:00:00,166 --> 00:00:02,683 手臂同时入水 形成Y字形 2 00:00:03,350 --> 00:00:04,283 蝶泳 3 00:00:05,750 --> 00:00:07,383 怎么不从基础学啊 4 00:00:08,183 --> 00:00:10,000 腿部动作要像海豚一样 5 00:00:10,383 --> 00:00:12,449 以腰部为核心 双腿并拢
