横向
1
Goods brought in from another country
4
Largest hot desert in the world
7
Half of the Earth
9
Largest river in South America
10
Ridge of rock or coral near the surface
11
Area where water covers the soil
12
Large body of water partly enclosed by land
纵向
2
Land surrounded by water on three sides
3
One of seven major landmasses
5
Distance east or west of prime meridian
6
Largest ocean on Earth
8
Low area between mountains
13
Region between the two tropic lines