横向
1
Low-lying land surrounded by higher ground
4
Body of water surrounded by land
6
Large area covered with trees
7
Distance north or south of equator
8
Steep rock face at edge of land
纵向
2
Region near the equator
3
Piece of land jutting into the sea
5
Largest ocean on Earth
9
Low area between mountains
10
Deep narrow valley with steep sides