横向
1
Smallest unit of an element
2
Icy body with a tail near the sun
4
Gas essential for breathing
5
Absolute temperature scale unit
9
Glass that splits light into spectrum
纵向
2
Solid with repeating atomic pattern
3
Path of a planet around the sun
6
Unit of heredity
7
Gas form of a liquid
8
Blocking of light by a celestial body