横向
1
Visual representation of an area
3
Goods sold to another country
6
Ridge of rock or coral near the surface
7
Large natural stream of water
12
Largest ocean on Earth
13
Low area between mountains
纵向
2
Landform where river meets the sea
4
Mountain that can erupt with lava
5
Imaginary line around the middle of Earth
8
Flat grassland in tropical regions
9
Region surrounding the North Pole
10
Body of water surrounded by land
11
Flat elevated area of land