横向
1
Ridge of rock or coral near the surface
3
Low-lying land surrounded by higher ground
5
Line dividing two countries
6
Half of the Earth
8
Large natural elevation of earth
纵向
2
Vast body of salt water
4
Low area between mountains
7
Large natural stream of water
9
Goods brought in from another country
10
Imaginary line around the middle of Earth
11
Where river meets the sea