横向
1
Large natural elevation of earth
3
City that is seat of government
6
Large area covered with trees
8
Flat grassland in tropical regions
9
Area where water covers the soil
10
Tool for finding directions
11
Vast body of salt water
12
Low-lying land surrounded by higher ground
纵向
2
Largest hot desert in the world
4
Cold treeless Arctic plain
5
Region between the two tropic lines
7
Deep narrow valley with steep sides
13
Flat elevated area of land
14
Mountain that can erupt with lava
15
Physical features of land