横向
1
Element found in all living things
3
Amplified beam of light
7
Curved glass that refracts light
8
Measure of matter in an object
10
Gas form of a liquid
11
Biological catalyst
纵向
2
Disturbance that transfers energy
4
Ball of burning gas in space
5
Center of an atom or cell
6
Tissue that contracts for movement
9
Gas essential for breathing