横向
1
Low-lying land surrounded by higher ground
3
Largest hot desert in the world
4
Goods sold to another country
8
Half of the Earth
9
Large slow-moving mass of ice
10
Long-term weather patterns of an area
11
Wearing away of land by water or wind
13
Largest ocean on Earth
纵向
2
Largest river in South America
5
Vast body of salt water
6
Ocean between Americas and Europe/Africa
7
Landform where river meets the sea
12
Large body of water partly enclosed by land
14
Visual representation of an area