To make sure I don't run into any performance issues, I instantiate a notification info map, a name/info map that I can use for rapid lookups.

为了保证不会遇到性能问题，我实例化了一个通知信息映射，这是一个名称/信息映射，可以用来进行快速查询。

youdao

You can start the navigation process by tapping on a colored icon showing travel time, either in the initial small bar at the bottom of the map, or on the info sheet.

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