横向
1
Mountain that can erupt with lava
4
Region surrounding the North Pole
5
Flat grassland in tropical regions
6
Where river meets the sea
9
Region near the equator
11
Large natural stream of water
13
Large body of water partly enclosed by land
纵向
2
Imaginary line around the middle of Earth
3
Region between the two tropic lines
4
Chain or group of islands
7
Physical features of land
8
Ridge of rock or coral near the surface
10
Flat elevated area of land
12
Low area between mountains