横向
1
Amplified beam of light
4
Preserved remains of ancient life
5
Natural satellite of Earth
8
Unit of heredity
9
Chemical element in table salt
10
Absolute temperature scale unit
11
Gas essential for breathing
纵向
2
Center of an atom or cell
3
Icy body with a tail near the sun
6
Smallest unit of an element
7
Magnetic metallic element