横向
1
Total number of people in an area
6
Piece of land jutting into the sea
7
Wearing away of land by water or wind
9
Deep narrow valley with steep sides
10
Cold treeless Arctic plain
11
Land surrounded by water on three sides
纵向
2
Goods brought in from another country
3
Goods sold to another country
4
Largest river in South America
5
Distance north or south of equator
8
City that is seat of government
9
Long-term weather patterns of an area