横向
1
Half of the Earth
2
Physical features of land
5
Wearing away of land by water or wind
9
Largest river in South America
10
Piece of land jutting into the sea
纵向
2
Cold treeless Arctic plain
3
Ridge of rock or coral near the surface
4
Large natural elevation of earth
6
Land surrounded by water on three sides
7
Narrow sea inlet between cliffs
8
Large area covered with trees
11
Vast body of salt water