横向
1
Icy body with a tail near the sun
3
Ball of burning gas in space
5
Substance with pH above 7
7
Gas essential for breathing
8
Push or pull on an object
纵向
1
Element found in all living things
2
Tectonic landmass section
4
The Red Planet
6
Center of an atom or cell
7
Path of a planet around the sun