横向
1
Largest ocean on Earth
4
Imaginary line around the middle of Earth
5
Half of the Earth
7
Landform where river meets the sea
9
One of seven major landmasses
13
Vast body of salt water
14
Chain or group of islands
纵向
2
Large natural stream of water
3
Ocean between Americas and Europe/Africa
6
Total number of people in an area
8
Large area covered with trees
10
Region near the equator
11
Flat grassland in tropical regions
12
Low area between mountains