横向
1
Mountain that can erupt with lava
5
Largest river in South America
6
Body of water surrounded by land
7
Largest ocean on Earth
9
Region between the two tropic lines
10
Seasonal heavy rainfall
11
Large slow-moving mass of ice
纵向
2
Flat elevated area of land
3
Land surrounded by water
4
Goods brought in from another country
8
Flat grassland in tropical regions