横向
1
Cold treeless Arctic plain
4
Body of water surrounded by land
6
Large area covered with trees
7
Imaginary line around the middle of Earth
8
Mountain that can erupt with lava
14
Large natural elevation of earth
15
Narrow sea inlet between cliffs
纵向
2
Dry land with little rainfall
3
Tool for finding directions
5
Deep narrow valley with steep sides
9
Vast body of salt water
10
Height above sea level
11
Region surrounding the North Pole
12
Large natural stream of water
13
Distance east or west of prime meridian