横向
1
Imaginary line around the middle of Earth
4
Large area covered with trees
5
Largest ocean on Earth
6
Region surrounding the North Pole
9
Land surrounded by water
纵向
1
Where river meets the sea
2
Tool for finding directions
3
Region near the equator
7
Seasonal heavy rainfall
8
Ridge of rock or coral near the surface
10
Area where water covers the soil