横向
1
Half of the Earth
5
Raised area of land, smaller than a mountain
8
Physical features of land
10
Distance east or west of prime meridian
13
Largest river in South America
纵向
2
Low-lying land surrounded by higher ground
3
City that is seat of government
4
Area where water covers the soil
6
Line dividing two countries
7
Body of water surrounded by land
9
Wearing away of land by water or wind
11
Ridge of rock or coral near the surface
12
Imaginary line around the middle of Earth