横向
1
Largest ocean on Earth
5
Region surrounding the North Pole
6
Tool for finding directions
8
Vast body of salt water
9
Area where water covers the soil
纵向
2
Largest hot desert in the world
3
Land surrounded by water on three sides
4
Total number of people in an area
7
Where river meets the sea
10
Seasonal heavy rainfall
11
Ridge of rock or coral near the surface
12
Large natural elevation of earth