satnav /ˈsætnæv/

• 1. 

  N-UNCOUNT Satnav is a system that uses information from satellites to find the best way of getting to a place. It is often found in cars. Satnav is an abbreviation for "satellite navigation". 卫星导航系统

  例：

  We didn't have satnav, so the traditional map and compass took over.

  我们没有卫星导航系统，所以就用传统的地图和指南针了。