tuple set的用法和樣例：
例句
- It adds the closest routing group to the set of routing groups for which the shortest paths have been determined.
將距離最近的路由組添加到其最短路徑已被確定的路由組集合中。 - The connection itself is made up of a set of connection objects and a user request that keeps the connection open during the request.
連接本身由一組集合對象和一個(gè)在整個(gè)請求過(guò)程中使連接保持打開(kāi)的用戶(hù)請求組成。
