横向
1
The Red Planet
3
Tectonic landmass section
5
Group of similar cells
8
Second lightest element
纵向
2
Path of a planet around the sun
4
Substance with pH below 7
6
Reddish electrical conductor
7
Fourth state of matter
The Red Planet
Tectonic landmass section
Group of similar cells
Second lightest element
Path of a planet around the sun
Substance with pH below 7
Reddish electrical conductor
Fourth state of matter