横向
1
Largest ocean on Earth
3
Line dividing two countries
5
Physical features of land
6
Vast body of salt water
7
Large natural elevation of earth
9
Piece of land jutting into the sea
10
Large area covered with trees
纵向
2
Where river meets the sea
4
Region surrounding the North Pole
5
Cold treeless Arctic plain
8
Mountain that can erupt with lava