横向
1
Low-lying land surrounded by higher ground
4
Long-term weather patterns of an area
5
Region between the two tropic lines
6
Goods sold to another country
9
Low area between mountains
纵向
2
Physical features of land
3
Large natural stream of water
7
Visual representation of an area
8
Region surrounding the North Pole
10
Flat grassland in tropical regions
11
Chain or group of islands