横向
1
Large area covered with trees
4
Largest ocean on Earth
5
Region surrounding the North Pole
6
Wearing away of land by water or wind
8
Height above sea level
9
Vast body of salt water
纵向
2
Region between the two tropic lines
3
Distance east or west of prime meridian
7
Ridge of rock or coral near the surface
10
Landform where river meets the sea