横向
1
Large natural elevation of earth
4
Height above sea level
5
Dry land with little rainfall
6
Largest ocean on Earth
纵向
2
Low area between mountains
3
Region between the two tropic lines
7
Low-lying land surrounded by higher ground
8
Steep rock face at edge of land
9
Vast body of salt water
10
One of seven major landmasses
11
Visual representation of an area
12
Ridge of rock or coral near the surface