横向
1
Element found in all living things
2
Center of an atom or cell
3
Blocking of light by a celestial body
4
Group of similar cells
5
Absolute temperature scale unit
8
Gas essential for breathing
10
Preserved remains of ancient life
纵向
2
Nerve cell in the brain
3
Biological catalyst
6
Infectious microscopic agent
7
Magnetic metallic element
9
Unit of heredity