Skin lies in the interface between inner condition and outer environment of body, which is an important protective organ as a barrier.
皮肤位于机体外环境和内环境的界面上，是机体重要的屏障保护器官。
Skin lies in the interface between inner condition and outer environment of body, which is an important protective organ as a barrier.
皮肤位于机体外环境和内环境的界面上，是机体重要的屏障保护器官。
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