接口由接口描述符描述，端点由端点描述符描述。
Interfaces are described by interface descriptors, and endpoints are described by end-point descriptors.
您必须更改多个部署描述符、配置文件和各种接口。
You had to change multiple deployment descriptors, configuration files, and various interfaces.
文件描述符是低层的输入和输出接口。
File descriptors are low-level interfaces to input and output.
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