横向
1
Hottest planet in solar system
3
Nerve cell in the brain
5
The Red Planet
7
Mass per unit volume
纵向
1
Infectious microscopic agent
2
Particle of light
4
Amplified beam of light
6
Curved glass that refracts light
Hottest planet in solar system
Nerve cell in the brain
The Red Planet
Mass per unit volume
Infectious microscopic agent
Particle of light
Amplified beam of light
Curved glass that refracts light