横向
1
Basic unit of life
3
Hottest planet in solar system
5
Form of thermal energy
6
Infectious microscopic agent
7
Gas essential for breathing
10
Path of a planet around the sun
纵向
2
Unit of force
4
Blocking of light by a celestial body
8
Ball of burning gas in space
9
Preserved remains of ancient life
11
Force that attracts objects together