机体维持内环境恒定和对环境适应能力的下降。
The organism maintains internal environment invariably with the decline to environmental adaptive capacity.
屏障的存在意义不仅是保护性结构，更重要的是能维持屏障所在组织器官内环境的恒定。
The significance of barriers lies not only in theia being protective structures, but also in their importance in maintaining constant micro-environments for organs in the which barriers are located.
身体大多数器官的功能是适应于维持此内环境中物理条件和溶解物质浓度的恒定。
The functions of most of the organs of the body are geared toward maintaining constant physical conditions and concentrations of dissolved substances in this internal environment.
身体大多数器官的功能是适应于维持此内环境中物理条件和溶解物质浓度的恒定。
The functions of most of the organs of the body are geared toward maintaining constant physical conditions and concentrations of dissolved substances in this internal environment.
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