横向
1
Flat grassland in tropical regions
5
Region near the equator
6
Low-lying land surrounded by higher ground
7
Area where water covers the soil
9
Long-term weather patterns of an area
纵向
2
Cold treeless Arctic plain
3
Physical features of land
4
Where river meets the sea
8
Deep narrow valley with steep sides
10
Steep rock face at edge of land
11
Imaginary line around the middle of Earth