横向
1
City that is seat of government
2
Seasonal heavy rainfall
5
Region surrounding the North Pole
6
Region between the two tropic lines
7
Largest river in South America
9
Largest hot desert in the world
纵向
1
Deep narrow valley with steep sides
3
Cold treeless Arctic plain
4
Raised area of land, smaller than a mountain
8
Flat grassland in tropical regions