横向
1
Largest river in South America
5
Largest hot desert in the world
7
Narrow sea inlet between cliffs
8
Low-lying land surrounded by higher ground
9
Height above sea level
纵向
2
Body of water surrounded by land
3
Where river meets the sea
4
Cold treeless Arctic plain
6
Total number of people in an area
10
Distance east or west of prime meridian