横向
1
Molten rock beneath Earth surface
4
Unit of force
5
Gas form of a liquid
6
Positive particle in nucleus
7
Compound containing oxygen
8
Center of an atom or cell
纵向
2
Gas essential for breathing
3
Ball of burning gas in space
5
Hottest planet in solar system
9
Element found in all living things
10
Substance with pH below 7