横向
1
Solid with repeating atomic pattern
4
Positive particle in nucleus
5
Biological catalyst
6
Gas essential for breathing
10
Our home planet
13
Substance with pH below 7
15
Curved glass that refracts light
纵向
2
Blocking of light by a celestial body
3
Naturally occurring inorganic solid
7
Infectious microscopic agent
8
Smallest unit of an element
9
Gas form of a liquid
11
Unit of force
12
Tectonic landmass section
14
Precious yellow metallic element