相比良好的滚身，这个拉水过程带来一个有效的长划臂技术，但这个并不长得过度。
Combined with good rotation, this pull through will lead to an efficient long stroke technique, but one that is not overly long.
相比良好的滚身，这个拉水过程带来一个有效的长划臂技术，但这个并不长得过度。
Combined with good rotation, this pull through will lead to an efficient long stroke technique, but one that is not overly long.
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