横向
1
Mountain that can erupt with lava
4
Ridge of rock or coral near the surface
5
Cold treeless Arctic plain
6
Region surrounding the North Pole
10
Seasonal heavy rainfall
纵向
2
Where river meets the sea
3
Region near the equator
3
Region between the two tropic lines
7
Large body of water partly enclosed by land
8
Large natural stream of water
9
Physical features of land