横向
1
Region between the two tropic lines
4
Where river meets the sea
7
Large natural stream of water
8
Long-term weather patterns of an area
9
Cold treeless Arctic plain
12
Flat grassland in tropical regions
纵向
2
Large natural elevation of earth
3
Largest hot desert in the world
4
Imaginary line around the middle of Earth
5
Goods brought in from another country
6
Vast body of salt water
10
Half of the Earth
11
Piece of land jutting into the sea