当您压缩隔膜和肋骨时，充分的呼吸作用不能发生，并且血液流经您的大脑和四肢的速度会减慢。
When you compress the diaphragm and ribs, full respiration cannot take place, and the blood flow is slowed to your brain and extremities.
还有一点也很明显，Subversion不能压缩已经压缩过的文件。
It's also clear that Subversion cannot compress an already compressed file.
那些从Web服务器获得输出并通过硬件和软件压缩数据的增件压缩产品并不能直接提高Web服务器的性能。
Add-on compression products which take the output from the Web server and compress the data through software or hardware may not directly improve the Web server performance.
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