横向
1
Goods sold to another country
4
Wearing away of land by water or wind
5
Cold treeless Arctic plain
6
City that is seat of government
8
Vast body of salt water
9
Largest hot desert in the world
纵向
2
Region surrounding the North Pole
3
One of seven major landmasses
6
Tool for finding directions
7
Region between the two tropic lines