横向
1
Ridge of rock or coral near the surface
3
Mountain that can erupt with lava
4
Region near the equator
5
Largest river in South America
8
Flat grassland in tropical regions
纵向
2
Chain or group of islands
4
Physical features of land
6
Landform where river meets the sea
7
Goods sold to another country
9
Body of water surrounded by land
10
Deep narrow valley with steep sides