横向
1
One of seven major landmasses
5
Raised area of land, smaller than a mountain
7
Cold treeless Arctic plain
9
Imaginary line around the middle of Earth
10
Landform where river meets the sea
11
Land surrounded by water
13
Line dividing two countries
纵向
2
Mountain that can erupt with lava
3
Area where water covers the soil
4
Region surrounding the North Pole
6
Region near the equator
8
Distance north or south of equator
12
Deep narrow valley with steep sides
14
Largest river in South America