横向
1
Dry land with little rainfall
4
Largest river in South America
5
Region near the equator
6
Physical features of land
7
Body of water surrounded by land
13
Imaginary line around the middle of Earth
纵向
2
Line dividing two countries
3
Land surrounded by water on three sides
8
Flat elevated area of land
9
Area where water covers the soil
10
Vast body of salt water
11
Goods sold to another country
12
Height above sea level