横向
1
Seasonal heavy rainfall
3
Largest ocean on Earth
6
Dry land with little rainfall
7
Area where water covers the soil
8
Height above sea level
纵向
2
Deep narrow valley with steep sides
4
Cold treeless Arctic plain
5
Line dividing two countries
9
Landform where river meets the sea
10
Chain or group of islands
11
Steep rock face at edge of land
12
Distance east or west of prime meridian