横向
1
Distance east or west of prime meridian
6
Largest ocean on Earth
7
Deep narrow valley with steep sides
8
Line dividing two countries
9
Large slow-moving mass of ice
10
Steep rock face at edge of land
纵向
2
Imaginary line around the middle of Earth
3
Flat elevated area of land
4
Large body of water partly enclosed by land
5
One of seven major landmasses
11
Largest river in South America