横向
1
Compound containing oxygen
4
Curved glass that refracts light
6
Center of an atom or cell
9
Substance with pH below 7
10
Unit of power
纵向
2
Infectious microscopic agent
3
Tissue that contracts for movement
5
Unit of electric potential
7
Hottest planet in solar system
8
The Red Planet
11
Path of a planet around the sun