横向
1
Large area covered with trees
3
Low area between mountains
4
Distance north or south of equator
5
Region surrounding the North Pole
8
Distance east or west of prime meridian
9
Largest hot desert in the world
10
Largest ocean on Earth
纵向
2
Land surrounded by water
5
Largest river in South America
6
Ocean between Americas and Europe/Africa
7
Large slow-moving mass of ice