横向
1
Low area between mountains
4
Region between the two tropic lines
5
Narrow sea inlet between cliffs
8
Largest river in South America
9
Goods sold to another country
纵向
2
Area where water covers the soil
3
Long-term weather patterns of an area
6
Large body of water partly enclosed by land
7
Flat grassland in tropical regions
10
Tool for finding directions