There are different levels of severity, and the effects can change over time.

运动障碍的严重程度的不同，其影响程度随着时间的变化也不同。

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They can be treated differently and are of different levels of severity.

他们可以作不同的处理，并有不同程度的严重性。

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They can be treated differently and are of different levels of severity.

他们可以作不同的处理，并有不同程度的严重性。

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