横向
1
Visual representation of an area
3
Low-lying land surrounded by higher ground
4
Distance north or south of equator
8
Large slow-moving mass of ice
10
Low area between mountains
11
Largest river in South America
12
Chain or group of islands
纵向
2
Physical features of land
5
Ocean between Americas and Europe/Africa
6
Total number of people in an area
7
Cold treeless Arctic plain
9
Dry land with little rainfall