横向
1
Region surrounding the North Pole
5
Large area covered with trees
7
Land surrounded by water on three sides
8
Cold treeless Arctic plain
9
Largest ocean on Earth
纵向
2
Tool for finding directions
3
Long-term weather patterns of an area
4
Large natural elevation of earth
6
Large natural stream of water
10
Flat elevated area of land
11
Large slow-moving mass of ice
12
Mountain that can erupt with lava