横向
1
Land surrounded by water
4
Large natural elevation of earth
5
Flat grassland in tropical regions
8
Low area between mountains
纵向
2
Vast body of salt water
3
City that is seat of government
6
Low-lying land surrounded by higher ground
7
Wearing away of land by water or wind
9
Region surrounding the North Pole
10
Mountain that can erupt with lava
11
Where river meets the sea