横向
1
Vast body of salt water
3
Cold treeless Arctic plain
5
Large natural stream of water
6
Low-lying land surrounded by higher ground
7
One of seven major landmasses
纵向
2
Ridge of rock or coral near the surface
3
Physical features of land
4
Distance east or west of prime meridian
8
Total number of people in an area
9
Region surrounding the North Pole