横向
1
Steep rock face at edge of land
4
Distance north or south of equator
5
Ridge of rock or coral near the surface
6
Vast body of salt water
8
Wearing away of land by water or wind
12
Total number of people in an area
15
Mountain that can erupt with lava
纵向
2
Largest ocean on Earth
3
Chain or group of islands
7
Large slow-moving mass of ice
9
City that is seat of government
10
Region surrounding the North Pole
11
Piece of land jutting into the sea
13
Seasonal heavy rainfall
14
Flat elevated area of land