例如，运动员训练时他的肌纤维会受损。
For example, when an athlete trains, her muscle fibers break down.
当进行演习，是您的肌肉纤维是最有利的运动。
When undergoing exercise it is your muscle fibers that are enabling most of the movement.
当进行演习，是您的肌肉纤维是最有利的运动。
When undergoing exercise it is your muscle fibers that are enabling most of the movement.
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