横向
1
Flat grassland in tropical regions
4
Dry land with little rainfall
5
Steep rock face at edge of land
6
Largest ocean on Earth
7
Largest river in South America
纵向
2
Cold treeless Arctic plain
3
Vast body of salt water
5
Piece of land jutting into the sea
8
Seasonal heavy rainfall
9
Long-term weather patterns of an area