横向
1
Imaginary line around the middle of Earth
3
Goods sold to another country
4
Dry land with little rainfall
6
Flat grassland in tropical regions
8
Chain or group of islands
10
Region near the equator
14
Vast body of salt water
纵向
2
Line dividing two countries
3
Wearing away of land by water or wind
5
Cold treeless Arctic plain
7
Long-term weather patterns of an area
9
Flat elevated area of land
11
Body of water surrounded by land
12
Largest river in South America
13
Piece of land jutting into the sea