横向
1
Vast body of salt water
3
Landform where river meets the sea
5
Largest hot desert in the world
8
Seasonal heavy rainfall
9
Tool for finding directions
12
Steep rock face at edge of land
纵向
2
Low area between mountains
4
Line dividing two countries
6
Largest river in South America
7
Wearing away of land by water or wind
10
Total number of people in an area
11
Large natural elevation of earth