横向
1
Largest river in South America
4
Cold treeless Arctic plain
5
Low area between mountains
9
Land surrounded by water
10
Goods brought in from another country
11
Land surrounded by water on three sides
12
Large slow-moving mass of ice
纵向
1
Height above sea level
2
Wearing away of land by water or wind
3
Imaginary line around the middle of Earth
6
One of seven major landmasses
7
Body of water surrounded by land
8
Physical features of land