横向
1
Low-lying land surrounded by higher ground
4
Physical features of land
5
Distance north or south of equator
9
Distance east or west of prime meridian
纵向
2
Body of water surrounded by land
3
Long-term weather patterns of an area
6
Line dividing two countries
7
Flat elevated area of land
8
Largest river in South America
10
One of seven major landmasses