横向
1
Goods sold to another country
2
Tool for finding directions
7
Where river meets the sea
8
Physical features of land
9
Distance north or south of equator
10
Large natural elevation of earth
11
Line dividing two countries
纵向
2
Deep narrow valley with steep sides
3
Largest ocean on Earth
4
Height above sea level
5
Cold treeless Arctic plain
6
Wearing away of land by water or wind