横向
1
Physical features of land
4
Flat elevated area of land
6
Region surrounding the North Pole
7
Ocean between Americas and Europe/Africa
10
Deep narrow valley with steep sides
11
Large natural elevation of earth
纵向
2
Largest ocean on Earth
3
Wearing away of land by water or wind
4
Land surrounded by water on three sides
5
Raised area of land, smaller than a mountain
8
Region near the equator
9
Piece of land jutting into the sea
12
Seasonal heavy rainfall