a computer system that uses information obtained from satellites to guide the driver of a vehicle (the abbreviation for ‘satellite navigation’) 卫星导航（全写为 satellite navigation，利用接收到的卫星信息为驾车者导航的计算机系统） 
The drivers all have satnav in the van. 司机都在货车里安装了卫星导航。 🔊🔊 She switched on the satnav system before she left the airport. 她在离开机场之前打开了卫星导航系统。 This satnav is very easy to use. 该卫星导航非常易于使用。
