以下为句子列表：
英文: On numerous occasions it has been written and implied that a swimmer should remain long, on the side, and with an arm outstretched for a period in crawl/back stroke swimming.
中文: 在无数的场合中，关于游泳运动员应该在爬泳/仰泳中手臂伸展并保持一段时间并同时保持长的身体姿势都被提过或记录过。
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英文: Simple and accurate settings of cutting depth and free settings for back stroke of pressure plate to reduve the idle motion and improve working efficiency.
中文: 裁力深度设定简单、准确、压板回程可任意设定，减少空行程，提高工效。
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英文: The start in back stroke and medley relay races shall be from the water.
中文: 仰泳和混和接力泳的出发是在水中。
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