The deal to the Russian system is the world's second global positioning system.

俄罗斯的格洛纳斯系统是世界上第二套全球定位系统。

youdao

The deal to the Russian system is the world's second global positioning system.

俄罗斯的格洛纳斯系统是世界上第二套全球定位系统。

youdao