横向
1
Deep narrow valley with steep sides
4
Region surrounding the North Pole
5
Large slow-moving mass of ice
6
Largest hot desert in the world
7
Steep rock face at edge of land
8
Goods sold to another country
9
Largest ocean on Earth
11
Where river meets the sea
纵向
1
City that is seat of government
2
Tool for finding directions
3
Largest river in South America
10
Flat elevated area of land