横向
1
Body of water surrounded by land
4
Cold treeless Arctic plain
5
Land surrounded by water
9
Land surrounded by water on three sides
10
Low-lying land surrounded by higher ground
11
Physical features of land
12
Half of the Earth
纵向
2
Large natural stream of water
3
Deep narrow valley with steep sides
6
Landform where river meets the sea
7
Total number of people in an area
8
Wearing away of land by water or wind