结论罗红霉素能改善大鼠急性肺损伤时气体交换能力，调节肺部细胞因子，对内毒素诱导的急性肺损伤有保护作用。
CONCLUSION Roxithromycin has a protective effect on rat acute lung injury induced by LPS through regulating cytokines, improving gas exchange ability, and inhibiting lung permeability.
结果表明：hfov能维持正常气体交换功能，其效能明显受潮气量大小和频率高低的影响，以潮气量的作用更为突出。
The results demonstrate that HFOV can maintain normal gas exchange. The effectiveness of HFOV correlates predominately with the amount of tidal volume and the rate of frequency, especially the former.
气孔是植物与外界环境进行气体、水分交换的通道，对植物的光合、蒸腾等生理活动起着重要的调节作用。
Stomata control gas and moisture exchanges between the plant and the external atmosphere. They play an important role in plant photosynthesis and transpiration.
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