横向
1
Largest river in South America
4
Vast body of salt water
5
Land surrounded by water
6
Area where water covers the soil
7
Mountain that can erupt with lava
8
Cold treeless Arctic plain
9
Line dividing two countries
10
Large slow-moving mass of ice
纵向
1
Chain or group of islands
2
One of seven major landmasses
3
Landform where river meets the sea