横向
1
Largest river in South America
4
Where river meets the sea
5
Region between the two tropic lines
8
Body of water surrounded by land
9
Wearing away of land by water or wind
10
Large natural stream of water
纵向
2
Mountain that can erupt with lava
3
Piece of land jutting into the sea
6
Large slow-moving mass of ice
7
Goods sold to another country