横向
1
Biological catalyst
2
Path of a planet around the sun
4
The Red Planet
5
Basic unit of life
6
Natural satellite of Earth
7
Magnetic metallic element
纵向
2
Gas essential for breathing
3
Blocking of light by a celestial body
Biological catalyst
Path of a planet around the sun
The Red Planet
Basic unit of life
Natural satellite of Earth
Magnetic metallic element
Gas essential for breathing
Blocking of light by a celestial body