横向
1
Wearing away of land by water or wind
4
Region surrounding the North Pole
5
Body of water surrounded by land
9
Vast body of salt water
10
Half of the Earth
11
Physical features of land
纵向
2
One of seven major landmasses
3
Ocean between Americas and Europe/Africa
6
Line dividing two countries
7
Large natural elevation of earth
8
Region between the two tropic lines