横向
1
Deep narrow valley with steep sides
4
Half of the Earth
6
Cold treeless Arctic plain
8
City that is seat of government
9
Flat grassland in tropical regions
13
Physical features of land
纵向
2
Low area between mountains
3
Low-lying land surrounded by higher ground
5
Large natural stream of water
7
Large natural elevation of earth
10
Land surrounded by water
11
Land surrounded by water on three sides
12
Area where water covers the soil
14
Long-term weather patterns of an area