横向
1
Low-lying land surrounded by higher ground
3
Deep narrow valley with steep sides
4
Region near the equator
5
Large area covered with trees
6
One of seven major landmasses
10
Wearing away of land by water or wind
11
Goods sold to another country
纵向
2
Distance north or south of equator
3
Long-term weather patterns of an area
7
Seasonal heavy rainfall
8
City that is seat of government
9
Mountain that can erupt with lava