not do a stroke of work
一点工作也不做
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Swimmers that do not have a balanced hip rotation will in turn have an unbalanced stroke, resulting in a waste of energy, with one side of the body performing most of the work.
游泳运动员不均衡地转髋就不会均衡的交替划水，就会使身体一侧做更多的功而导致能量的浪费。
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