横向
1
Low-lying land surrounded by higher ground
4
Distance east or west of prime meridian
5
Seasonal heavy rainfall
6
Raised area of land, smaller than a mountain
7
Largest ocean on Earth
11
Where river meets the sea
12
Flat elevated area of land
13
Vast body of salt water
14
Goods sold to another country
纵向
2
Steep rock face at edge of land
3
Chain or group of islands
8
Total number of people in an area
9
Ridge of rock or coral near the surface
10
Distance north or south of equator
15
Large natural stream of water