横向
1
Cold treeless Arctic plain
4
Flat elevated area of land
5
Dry land with little rainfall
6
Ocean between Americas and Europe/Africa
7
Region surrounding the North Pole
8
Piece of land jutting into the sea
11
Chain or group of islands
纵向
1
Physical features of land
2
Deep narrow valley with steep sides
3
Area where water covers the soil
9
Flat grassland in tropical regions
10
Height above sea level