横向
1
Large slow-moving mass of ice
4
Low area between mountains
5
Large area covered with trees
8
Deep narrow valley with steep sides
9
Low-lying land surrounded by higher ground
10
Large natural stream of water
13
Landform where river meets the sea
纵向
2
Goods brought in from another country
3
Ocean between Americas and Europe/Africa
6
Ridge of rock or coral near the surface
7
Raised area of land, smaller than a mountain
8
Piece of land jutting into the sea
11
Long-term weather patterns of an area
12
Flat grassland in tropical regions