横向
1
Body of water surrounded by land
4
Low-lying land surrounded by higher ground
5
Line dividing two countries
6
Goods brought in from another country
7
Large natural elevation of earth
纵向
2
Wearing away of land by water or wind
3
Cold treeless Arctic plain
8
Raised area of land, smaller than a mountain
9
Narrow sea inlet between cliffs
10
Landform where river meets the sea
11
One of seven major landmasses
12
Flat elevated area of land