The function in Listing 20 returns a vector of vectors. This is because each document could generate zero to many map entries, and each map entry is represented as a vector.

清单 20 中的函数返回矢量的矢量，这是因为每个文档都可能生成零到多个映射条目，而每个映射条目都被表示为一个矢量。

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The protocol service is queried using the management entry point vector and the statistics are retrieved for each supported protocol on that system.

使用管理入口点向量查询协议服务，获取系统上支持的每个协议的统计数据。

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As always, the protocol service is notified by the binding vector entry point about the change in the binding handle.

与平常一样，绑定向量入口点把绑定句柄的变化告知协议服务。

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