横向
1
Region surrounding the North Pole
3
Low area between mountains
7
Chain or group of islands
8
Largest river in South America
9
Large area covered with trees
纵向
2
Where river meets the sea
4
Region between the two tropic lines
5
Largest hot desert in the world
6
Mountain that can erupt with lava
10
Ocean between Americas and Europe/Africa
11
Low-lying land surrounded by higher ground