横向
1
Large natural stream of water
4
Total number of people in an area
5
Landform where river meets the sea
8
Large natural elevation of earth
9
Visual representation of an area
10
Steep rock face at edge of land
11
Land surrounded by water on three sides
纵向
2
Cold treeless Arctic plain
3
Line dividing two countries
6
Region surrounding the North Pole
7
Largest ocean on Earth
12
Seasonal heavy rainfall