横向
1
Large area covered with trees
5
Largest river in South America
6
Large slow-moving mass of ice
7
Cold treeless Arctic plain
8
Half of the Earth
9
Piece of land jutting into the sea
纵向
2
Flat grassland in tropical regions
3
Vast body of salt water
4
Imaginary line around the middle of Earth
10
Wearing away of land by water or wind
11
One of seven major landmasses
12
Line dividing two countries
13
Landform where river meets the sea