手沿着脊椎的方向放好，然后屈膝，把脚放到地板上，脚跟靠近坐骨。

Lay your arms on the floor alongside your torso, then bend your knees and set your feet against the floor with the heels close to the sitting bones.

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有些坐骨神经的问题，很容易在突发的脊椎伤害时发生，例如车祸。

It's easy to trace some spinal problems to an event, such as a car accident.

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