Lie facedown on a leg curl machine, and hook your ankles under the padded bar.
平躺在长凳上，双脚置于地面。 正手抓住杠铃，你的双手比肩稍宽。
It can be used to make vaporizer, distributor, ignition and braking systems, slide block, electrical magnetic valve, wheel, and impeller, curl machine, coffee pot.
它可以用来制造蒸发器，分配器，点火和制动系统，滑块，电动电磁阀，轮，叶轮，卷曲机，咖啡壶。
It can be used to make vaporizer, distributor, ignition and braking systems, slide block, electrical magnetic valve, wheel, and impeller, curl machine, coffee pot.
它可以用来制造蒸发器，分配器，点火和制动系统，滑块，电动电磁阀，轮，叶轮，卷曲机，咖啡壶。
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