横向
1
Largest ocean on Earth
3
Deep narrow valley with steep sides
4
Seasonal heavy rainfall
5
Dry land with little rainfall
9
City that is seat of government
11
Imaginary line around the middle of Earth
13
Large area covered with trees
纵向
2
Wearing away of land by water or wind
3
Steep rock face at edge of land
6
Tool for finding directions
7
Largest river in South America
8
Land surrounded by water on three sides
10
Large slow-moving mass of ice
12
Visual representation of an area