Pronation is the gentle roll of a foot inward after making contact and it is normal and necessary for a foot to evenly absorb the impact of striking the ground.
脚内翻是脚触地后的稍微内翻，以均匀吸收触地后的冲力，这是一个正常而必要的的动作。
This entirely normal inward rolling is called pronation.
这种完全正常的向内翻转称为“内翻”。
This entirely normal inward rolling is called pronation.
这种完全正常的向内翻转称为“内翻”。
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