横向
1
Cold treeless Arctic plain
4
Large body of water partly enclosed by land
5
Large natural stream of water
6
Largest hot desert in the world
9
Region between the two tropic lines
12
Goods sold to another country
纵向
2
Land surrounded by water on three sides
3
Long-term weather patterns of an area
7
Tool for finding directions
8
Height above sea level
10
Physical features of land
11
Flat grassland in tropical regions