横向
1
Large natural stream of water
4
Area where water covers the soil
5
Deep narrow valley with steep sides
7
Chain or group of islands
9
Dry land with little rainfall
10
Distance north or south of equator
纵向
2
Imaginary line around the middle of Earth
3
Flat elevated area of land
6
Low-lying land surrounded by higher ground
8
Body of water surrounded by land
11
Distance east or west of prime meridian
12
Largest ocean on Earth