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词汇 sprag
释义 sprag AHD[sprăg] D.J.[spræg]K.K.[spræg]n.(名词)
    1. A piece of wood or metal wedged beneath a wheel or between spokes to keep a vehicle from rolling.制动木:安装于一轮下或辐条间用以阻止车辆滑动的一片木头或金属
    2. A pointed stake lowered at an angle into the ground from a vehicle to prevent movement.点闸:从车辆上放低一个角度嵌入地面以防止其运动的凸出的闸
    1. A prop to support a mine roof.支撑物:支撑矿顶的支柱
Etymology语源
  1. [Perhaps of Scandinavian origin] [可能起源于斯堪的那维亚]
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