横向
1
Total number of people in an area
4
Imaginary line around the middle of Earth
5
City that is seat of government
7
Deep narrow valley with steep sides
8
Landform where river meets the sea
纵向
2
Mountain that can erupt with lava
3
Distance east or west of prime meridian
4
Goods sold to another country
6
Large area covered with trees
9
Narrow sea inlet between cliffs