... 后转身 rear pivot; reverse pivot 放松踢 relaxed kicking 单手操 single movement practice ...
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Effective dolphin kicking is done with relaxed ankles which pull the water and provide a point of balance and leverage for the swimmer.
放松的踝关节是高效的海豚踢的关键,让泳者保持平衡并给予发力点。
With good kicking technique, you can bend your knee a little on the down stroke but this shouldn't be a 'driven' movement, it's just a slight movement from a relaxed knee.
好的打腿技术,在你下压的时候膝盖稍微有些弯曲,但是并不大,只是膝盖放松的后果。
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