中国已经在四月十四日成功发射了其第一颗指南针系统的定位卫星。

China launched the first satellite of its Compass system on April 14.

youdao

车载电子指南针系统作为人性化部件之一，对它的研究具有重要意义。

As the compass system is an intelligent part of vehicle, the study on it is very important.

youdao

我们没有卫星导航系统，所以就用传统的地图和指南针了。

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

《柯林斯英汉双解大词典》