横向
1
Largest river in South America
3
Cold treeless Arctic plain
4
Seasonal heavy rainfall
5
Tool for finding directions
7
Ocean between Americas and Europe/Africa
8
Vast body of salt water
9
Deep narrow valley with steep sides
纵向
2
Piece of land jutting into the sea
3
Region between the two tropic lines
4
Large natural elevation of earth
6
Largest hot desert in the world