横向
1
Chain or group of islands
6
Low area between mountains
8
Line dividing two countries
9
Where river meets the sea
10
Goods brought in from another country
11
Area where water covers the soil
纵向
2
Land surrounded by water on three sides
3
Region near the equator
4
Cold treeless Arctic plain
5
Flat elevated area of land
7
Wearing away of land by water or wind
12
Half of the Earth
13
Largest hot desert in the world