横向
1
Total number of people in an area
4
Large area covered with trees
6
Ridge of rock or coral near the surface
7
Flat grassland in tropical regions
纵向
2
Imaginary line around the middle of Earth
3
Where river meets the sea
4
Narrow sea inlet between cliffs
5
Visual representation of an area
8
Flat elevated area of land
9
Large body of water partly enclosed by land