national standard map

例句：

1. 1.The national standard map is the most accurate representation of our country's geography.
   国家标准地图是我们国家地理最准确的表示。
2. 2. The national standard map was used to create a new road network in the city.
   国家标准地图被用来在城市中创建新的路网。
3. 3.The national standard map is essential for navigation and transportation.
   国家标准地图对于导航和交通至关重要。