横向
1
Long-term weather patterns of an area
4
Largest river in South America
5
Where river meets the sea
7
Low area between mountains
纵向
2
Raised area of land, smaller than a mountain
3
Flat grassland in tropical regions
6
Body of water surrounded by land
8
Large natural stream of water
9
Goods brought in from another country
10
Landform where river meets the sea