髋关节病变会导致全身的活动受限制。
Pathological deterioration of the hip joint can constrain your whole body's movement.
参加课外活动的自由完全不受限制。
Freedom to pursue extracurricular activities is totally unrestricted.
对于没有持续性记录的活动来说，实地观察法是一种非常有效的方法。持续的观察可以发现是否有不正确进入受限制区域的行为。
Observation is particularly important where there is no permanent record of activities –discrete observation can reveal whether there is improper access to a restricted area.
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