横向
1
Deep narrow valley with steep sides
3
Region surrounding the North Pole
5
Wearing away of land by water or wind
7
Flat elevated area of land
8
Large body of water partly enclosed by land
10
Distance north or south of equator
12
Half of the Earth
纵向
1
One of seven major landmasses
2
Distance east or west of prime meridian
4
Imaginary line around the middle of Earth
6
Tool for finding directions
9
Steep rock face at edge of land
11
Region near the equator
13
Low-lying land surrounded by higher ground