横向
1
Largest ocean on Earth
4
Cold treeless Arctic plain
5
Dry land with little rainfall
6
Chain or group of islands
9
Land surrounded by water
10
Total number of people in an area
纵向
2
Large body of water partly enclosed by land
3
Ocean between Americas and Europe/Africa
7
Imaginary line around the middle of Earth
8
Flat grassland in tropical regions
11
Visual representation of an area
12
Tool for finding directions