支撑腿的另一侧腿屈膝90度。现将屈腿伸直，将对侧腿抬起，抬止髋的高度，保持单腿在做抬腿时的平衡。

Now straighten the leg, driving up with the opposite knee to hip height, so that you are balancing on one foot on the step.

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你要拿起洗发水，手臂向上伸直，紧贴耳朵，然后只要将手肘向后弯曲90度，再将手肘伸直。

So you want to take your shampoo, hold your arm straight up, keep your arm right next to your ear, and then simply bend your elbow to ninety degree, and then lift it back up.

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在普纱系统中提高纤维伸直度的关键工序是并条工序。

Thekey process improving fibre straightness is drawing process in carding system, however, in combing system, is combing process.

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