The first part, the initial select statement, predefines the starting point (e.g. the manager in an organization chart or the departure in a flight connection).

第一个部分，起始select语句，预先定义了起始点(如组织图中的管理人员或航班中转里的起航)。

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A connect request was made on an already connected socket1. connection point manager.

在一个已经连接的套接字上做了一个连接请求。

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