横向
1
Half of the Earth
7
Largest river in South America
8
One of seven major landmasses
10
Low-lying land surrounded by higher ground
11
Region between the two tropic lines
纵向
2
Largest ocean on Earth
3
Total number of people in an area
4
Physical features of land
5
Chain or group of islands
6
Long-term weather patterns of an area
9
Distance north or south of equator