横向
1
Physical features of land
6
Height above sea level
9
Largest river in South America
10
Region between the two tropic lines
11
Large body of water partly enclosed by land
纵向
2
Seasonal heavy rainfall
3
Largest ocean on Earth
4
Landform where river meets the sea
5
Cold treeless Arctic plain
7
Low-lying land surrounded by higher ground
8
Where river meets the sea