横向
1
Cold treeless Arctic plain
4
Half of the Earth
7
Steep rock face at edge of land
8
Largest river in South America
9
Wearing away of land by water or wind
纵向
2
Piece of land jutting into the sea
3
One of seven major landmasses
5
Land surrounded by water on three sides
6
Chain or group of islands
7
Tool for finding directions