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On pool deck, swimmer bends forward and practices arm action.
站在泳池边，运动员向前弯曲，同时作蝶泳移臂的动作；
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On pool deck, demonstrate correct timing of breathing/arm action.
站在泳池边，专注于呼吸和胳膊动作在时间上的正确配合；
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The swimming pool is currently out of action.
游泳池眼下无法使用。
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The swimming pool is currently out of action.
游泳池眼下无法使用。
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