横向
1
Land surrounded by water
3
Large area covered with trees
5
Cold treeless Arctic plain
9
Deep narrow valley with steep sides
10
Distance north or south of equator
11
Large natural stream of water
纵向
2
Region between the two tropic lines
4
Ocean between Americas and Europe/Africa
5
Physical features of land
6
Largest river in South America
7
Half of the Earth
8
Landform where river meets the sea