横向
1
Mountain that can erupt with lava
4
Largest river in South America
7
Cold treeless Arctic plain
8
Piece of land jutting into the sea
9
Goods sold to another country
纵向
2
Region surrounding the North Pole
3
Large area covered with trees
4
Ocean between Americas and Europe/Africa
5
Largest hot desert in the world
6
Land surrounded by water on three sides