横向
1
Region surrounding the North Pole
4
Goods sold to another country
5
Large body of water partly enclosed by land
8
Deep narrow valley with steep sides
10
Vast body of salt water
纵向
2
Dry land with little rainfall
3
Distance east or west of prime meridian
6
Wearing away of land by water or wind
7
Where river meets the sea
9
City that is seat of government