中间阶层是社会利益结构中的缓冲层。

The middle class is a buffer layer in the structure of social interests.

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帧缓冲区驱动程序通常有三层。

The framebuffer driver normally has three layers.

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数据层—文件系统|数据库|缓冲系统。

Data layer - File system | Database | Caching system.

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当缓冲空了，传送层负责再装满它。

When the buffer is empty, the transport layer is responsible for refilling it.

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当缓冲空了，传送层负责再装满它。

When the buffer is empty, the transport layer is responsible for refilling it.

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