横向
1
Body of water surrounded by land
4
Largest ocean on Earth
5
Mountain that can erupt with lava
6
Flat grassland in tropical regions
8
One of seven major landmasses
纵向
1
Distance east or west of prime meridian
2
Wearing away of land by water or wind
3
Landform where river meets the sea
7
Region near the equator
9
City that is seat of government