它通过破坏咀嚼器官的完整性，严重的影响着全身健康。

It chews the organ through the destruction the integrity, serious influence whole body health.

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在人类长期的演化过程中，随着生产生活方式的改变，人类的咀嚼器官总体呈现出一个逐渐退化的趋势。

During the human evolution, the masticating apparatus have been weakened by the changes of producing and living style.

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