横向
1
Region near the equator
1
Region between the two tropic lines
3
Large body of water partly enclosed by land
4
Flat grassland in tropical regions
5
Goods brought in from another country
6
Mountain that can erupt with lava
7
Large natural stream of water
纵向
2
Goods sold to another country
3
Large slow-moving mass of ice
8
Distance east or west of prime meridian
9
Largest river in South America
10
Physical features of land
11
Low-lying land surrounded by higher ground
12
Flat elevated area of land