横向
1
Region surrounding the North Pole
3
Wearing away of land by water or wind
4
Dry land with little rainfall
7
Large slow-moving mass of ice
10
Vast body of salt water
纵向
2
Line dividing two countries
3
Goods sold to another country
5
Chain or group of islands
6
Seasonal heavy rainfall
8
Flat elevated area of land
9
Flat grassland in tropical regions