最大的问题是如何保持一个正常的步伐。

The biggest is trying to keep at it on a normal pace.

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测试：首先，测试一下你在轻松步伐下的正常步频。

The test: First, test your normal cadence at an easy pace.

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最然医生告诉她，她永远也不可能正常走路，但4年后，她创造了医学史上的奇迹，锻炼出了有节奏的步伐。

But the doctor told her that she could never walk normally until 4 years later, she built up a rhythmed step creating a miracle in Medical history.

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