横向
1
Total number of people in an area
6
Height above sea level
7
Line dividing two countries
9
Cold treeless Arctic plain
10
Tool for finding directions
12
Long-term weather patterns of an area
纵向
2
Distance east or west of prime meridian
3
Large natural stream of water
4
Physical features of land
5
Land surrounded by water on three sides
8
Ocean between Americas and Europe/Africa
11
Goods sold to another country