横向
1
Vast body of salt water
4
Goods brought in from another country
5
Chain or group of islands
6
Region between the two tropic lines
9
Goods sold to another country
11
Imaginary line around the middle of Earth
12
Large natural elevation of earth
13
Large natural stream of water
14
Flat grassland in tropical regions
15
Low-lying land surrounded by higher ground
纵向
2
Half of the Earth
3
Line dividing two countries
7
Total number of people in an area
8
Deep narrow valley with steep sides
10
One of seven major landmasses