横向
1
Line dividing two countries
4
Flat grassland in tropical regions
5
Region surrounding the North Pole
8
Visual representation of an area
9
Long-term weather patterns of an area
纵向
2
Large area covered with trees
3
Land surrounded by water on three sides
6
Chain or group of islands
7
Total number of people in an area
9
Deep narrow valley with steep sides
10
Ridge of rock or coral near the surface