横向
1
Center of an atom or cell
5
Smallest unit of an element
6
Nerve cell in the brain
8
Ball of burning gas in space
纵向
2
Amplified beam of light
3
Element found in all living things
4
Substance with pH above 7
7
Curved glass that refracts light
Center of an atom or cell
Smallest unit of an element
Nerve cell in the brain
Ball of burning gas in space
Amplified beam of light
Element found in all living things
Substance with pH above 7
Curved glass that refracts light