横向
1
Large natural stream of water
4
Seasonal heavy rainfall
5
Height above sea level
7
Largest ocean on Earth
8
Wearing away of land by water or wind
10
Ocean between Americas and Europe/Africa
纵向
2
Chain or group of islands
3
Imaginary line around the middle of Earth
6
Raised area of land, smaller than a mountain
9
Steep rock face at edge of land