横向
1
Large area covered with trees
4
Largest ocean on Earth
5
Imaginary line around the middle of Earth
10
City that is seat of government
纵向
2
Line dividing two countries
3
Flat elevated area of land
4
Total number of people in an area
6
Deep narrow valley with steep sides
7
Tool for finding directions
8
Ridge of rock or coral near the surface
9
One of seven major landmasses
11
Largest river in South America