横向
1
Our home planet
3
Hottest planet in solar system
7
Unit of force
纵向
2
Group of similar cells
4
Amplified beam of light
5
Nerve cell in the brain
6
Substance with pH below 7
8
Basic unit of life
Our home planet
Hottest planet in solar system
Unit of force
Group of similar cells
Amplified beam of light
Nerve cell in the brain
Substance with pH below 7
Basic unit of life