横向
1
Large area covered with trees
5
Imaginary line around the middle of Earth
7
Land surrounded by water on three sides
8
Flat grassland in tropical regions
10
Body of water surrounded by land
纵向
2
Line dividing two countries
3
Distance east or west of prime meridian
4
Goods brought in from another country
6
Piece of land jutting into the sea
9
Largest river in South America