横向
1
Height above sea level
5
Mountain that can erupt with lava
6
Ocean between Americas and Europe/Africa
7
Large natural stream of water
8
Large area covered with trees
纵向
2
Wearing away of land by water or wind
3
Flat grassland in tropical regions
4
Ridge of rock or coral near the surface
9
Piece of land jutting into the sea
10
Largest ocean on Earth