横向
1
Height above sea level
5
Ocean between Americas and Europe/Africa
7
Flat grassland in tropical regions
8
Ridge of rock or coral near the surface
9
Dry land with little rainfall
12
Half of the Earth
纵向
2
Long-term weather patterns of an area
3
Low-lying land surrounded by higher ground
4
Area where water covers the soil
6
Large natural elevation of earth
10
Distance east or west of prime meridian
11
Physical features of land
13
Largest river in South America
14
Wearing away of land by water or wind
15
City that is seat of government