Obviously the foundation of electronic navigation system can not meet this need, So human envisaged the possibility of radio transmitting stations on the air.

显然地基电子导航系统不能满足这种需要，于是人类就设想是否可以将无线电发射参考站建立在空中。

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Now, in many parts of the world, when you hire a car, you get a navigation system — a little electronic map on a screen with a machine voice.

目前在世界的许多地方，你在租用汽车时都会获得一个导航系统，它是显示在屏幕上的一张小型电子地图，可以发出机器声音。

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The smart displays provide navigation and collision avoidance visualization from the radar sources and are used together with the Electronic Chart Display and Information System-Navy (ECDIS-N).

智能显示器通过雷达信号提供导航服务并接收防撞信息，同时，该显示器还可以与海军电子图显示和信息系统（ECDIS-N）一同使用。

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Interior changes include a quieter cabin and electronic features like a new navigation system.

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