横向
1
Our home planet
4
Magnetic metallic element
6
Smallest unit of an element
7
Icy body with a tail near the sun
10
Center of an atom or cell
纵向
2
Curved glass that refracts light
3
Amplified beam of light
5
Group of similar cells
8
Path of a planet around the sun
9
Fourth state of matter
11
Unit of energy