横向
1
Height above sea level
5
Area where water covers the soil
6
Vast body of salt water
7
Seasonal heavy rainfall
8
Dry land with little rainfall
9
Total number of people in an area
10
Wearing away of land by water or wind
纵向
2
Cold treeless Arctic plain
3
Narrow sea inlet between cliffs
4
Half of the Earth
11
One of seven major landmasses