横向
1
Height above sea level
6
Largest river in South America
7
Line dividing two countries
8
Area where water covers the soil
10
Low-lying land surrounded by higher ground
纵向
1
Chain or group of islands
2
Dry land with little rainfall
3
Goods brought in from another country
4
Goods sold to another country
5
Flat elevated area of land
9
Where river meets the sea