横向
1
Cold treeless Arctic plain
4
Body of water surrounded by land
6
City that is seat of government
9
Height above sea level
纵向
2
Landform where river meets the sea
3
Region between the two tropic lines
4
Distance east or west of prime meridian
5
Deep narrow valley with steep sides
7
Wearing away of land by water or wind
8
Mountain that can erupt with lava
10
Largest ocean on Earth
11
Region surrounding the North Pole