横向
1
Steep rock face at edge of land
4
Low-lying land surrounded by higher ground
5
Line dividing two countries
6
Landform where river meets the sea
7
Half of the Earth
9
Region surrounding the North Pole
10
Ridge of rock or coral near the surface
纵向
1
One of seven major landmasses
2
Goods brought in from another country
3
Largest ocean on Earth
8
Body of water surrounded by land