横向
1
Cold treeless Arctic plain
5
Large natural stream of water
6
Goods brought in from another country
7
Height above sea level
9
Flat grassland in tropical regions
12
Chain or group of islands
13
Wearing away of land by water or wind
纵向
2
Vast body of salt water
3
Large natural elevation of earth
4
Line dividing two countries
8
Tool for finding directions
10
Half of the Earth
11
City that is seat of government