横向
1
Large natural stream of water
4
Physical features of land
5
Ocean between Americas and Europe/Africa
6
Wearing away of land by water or wind
9
Region between the two tropic lines
11
Vast body of salt water
12
Largest river in South America
纵向
2
One of seven major landmasses
3
Large area covered with trees
7
Seasonal heavy rainfall
8
Goods brought in from another country
10
Large natural elevation of earth