横向
1
Flat grassland in tropical regions
5
Distance north or south of equator
6
Dry land with little rainfall
8
Piece of land jutting into the sea
10
Largest ocean on Earth
11
Where river meets the sea
纵向
2
Large area covered with trees
3
Region surrounding the North Pole
4
Imaginary line around the middle of Earth
7
Largest river in South America
9
Land surrounded by water