横向
1
Particle of light
4
Tissue that contracts for movement
5
Preserved remains of ancient life
6
Substance with pH above 7
7
Nerve cell in the brain
10
Precious yellow metallic element
11
Ball of burning gas in space
纵向
1
Tectonic landmass section
2
Mass per unit volume
3
Center of an atom or cell
4
The Red Planet
8
Unit of power
9
Magnetic metallic element
12
Group of similar cells
13
Icy body with a tail near the sun