横向
1
Land surrounded by water
4
Imaginary line around the middle of Earth
6
Flat grassland in tropical regions
8
Region surrounding the North Pole
9
City that is seat of government
12
Largest river in South America
13
Area where water covers the soil
纵向
2
Seasonal heavy rainfall
3
Chain or group of islands
5
Cold treeless Arctic plain
7
Largest hot desert in the world
10
Dry land with little rainfall
11
Piece of land jutting into the sea