横向
1
Seasonal heavy rainfall
3
Low area between mountains
6
Piece of land jutting into the sea
8
Largest ocean on Earth
10
Largest hot desert in the world
11
Land surrounded by water
12
Dry land with little rainfall
纵向
2
Vast body of salt water
4
Large natural stream of water
5
Large area covered with trees
7
Cold treeless Arctic plain
9
Region surrounding the North Pole
13
Large natural elevation of earth