路由器状态为我们提供了从任意激活路由开始向上或向下遍历路由树的一种方式，以获得关于父、子、兄弟路由的信息。

Each ActivatedRoute in the RouterState provides methods to traverse up and down the route tree to get information we may need from parent, child and sibling routes.

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路由器状态为我们提供了从任意激活路由开始向上或向下遍历路由树的一种方式，以获得关于父、子、兄弟路由的信息。

Each ActivatedRoute in the RouterState provides methods to traverse up and down the route tree to get information from parent, child and sibling routes.

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路由器可以创建或维护一个包含可用路由及其状态的路由表，同时根据这些信息，利用距离和成本算法为数据包选择最佳路由。

A router may create or maintain a table of the available routes and their conditions and use this information along with distance and cost algorithms to determine the best route for a given packet.

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