横向
1
Total number of people in an area
4
Largest ocean on Earth
7
Vast body of salt water
8
Goods brought in from another country
9
Land surrounded by water
11
Chain or group of islands
13
Mountain that can erupt with lava
纵向
2
Large area covered with trees
3
Goods sold to another country
5
Deep narrow valley with steep sides
6
Tool for finding directions
10
Large body of water partly enclosed by land
12
Line dividing two countries
14
Raised area of land, smaller than a mountain