横向
1
Substance with pH below 7
4
Biological catalyst
5
The Red Planet
8
Amplified beam of light
纵向
2
Compound containing oxygen
3
Substance with pH above 7
6
Tectonic landmass section
7
Second lightest element
9
Gas essential for breathing
Substance with pH below 7
Biological catalyst
The Red Planet
Amplified beam of light
Compound containing oxygen
Substance with pH above 7
Tectonic landmass section
Second lightest element
Gas essential for breathing