横向
1
One of seven major landmasses
7
Flat grassland in tropical regions
9
Mountain that can erupt with lava
10
Steep rock face at edge of land
12
Area where water covers the soil
纵向
2
Seasonal heavy rainfall
3
Vast body of salt water
4
Flat elevated area of land
5
Where river meets the sea
6
Goods sold to another country
8
Total number of people in an area
11
Line dividing two countries