横向
1
Goods sold to another country
3
Largest river in South America
4
Large body of water partly enclosed by land
5
Seasonal heavy rainfall
6
Deep narrow valley with steep sides
纵向
1
Imaginary line around the middle of Earth
2
Where river meets the sea
6
Steep rock face at edge of land
7
Mountain that can erupt with lava
8
Line dividing two countries