横向
1
Mountain that can erupt with lava
5
Physical features of land
6
Largest river in South America
7
Large body of water partly enclosed by land
8
Area where water covers the soil
11
Large natural stream of water
纵向
2
Deep narrow valley with steep sides
3
Large natural elevation of earth
4
Large area covered with trees
9
Flat elevated area of land
10
Goods brought in from another country
12
Imaginary line around the middle of Earth
13
Ridge of rock or coral near the surface