横向
1
Gas form of a liquid
3
Mass per unit volume
4
Amplified beam of light
6
Group of similar cells
8
Absolute temperature scale unit
10
Substance with pH below 7
11
Second lightest element
纵向
1
Hottest planet in solar system
2
Infectious microscopic agent
5
The Red Planet
7
Unit of heredity
9
Our home planet