横向
1
Cold treeless Arctic plain
5
Low area between mountains
6
Line dividing two countries
7
Large natural elevation of earth
9
Mountain that can erupt with lava
10
Land surrounded by water on three sides
11
Vast body of salt water
纵向
2
Distance north or south of equator
3
Visual representation of an area
4
Physical features of land
8
Piece of land jutting into the sea
12
Imaginary line around the middle of Earth
13
Total number of people in an area
14
Chain or group of islands