横向
1
Chemical element in table salt
3
Positive particle in nucleus
8
Second lightest element
纵向
2
Path of a planet around the sun
4
Substance with pH below 7
5
Center of an atom or cell
6
Hottest planet in solar system
7
Infectious microscopic agent
Chemical element in table salt
Positive particle in nucleus
Second lightest element
Path of a planet around the sun
Substance with pH below 7
Center of an atom or cell
Hottest planet in solar system
Infectious microscopic agent