It will be the fourth global satellite navigation system after GPS, GLONASS and Galileo.

这将是继GPS（美）、格洛纳斯（俄）和伽利略（欧）之后的第四个全球卫星导航系统。

BDS is one of the four global navigation satellite systems in the world, along with GPS, Galileo and GLONASS.

北斗系统是与全球定位系统、伽利略和格洛纳斯并列的全球四大卫星导航系统之一。