横向
1
Second lightest element
3
Ball of burning gas in space
5
Unit of heredity
7
Unit of electric potential
8
Glass that splits light into spectrum
9
Path of a planet around the sun
纵向
2
Substance with pH below 7
4
Molten rock beneath Earth surface
6
Nerve cell in the brain
7
Hottest planet in solar system
8
Fourth state of matter
10
Precious yellow metallic element