Science Review

公开|
9
6
3
2
4
5
8
1
7

横向

1

Basic unit of life

3

Particle of light

4

Mass per unit volume

7

Reddish electrical conductor

纵向

2

Gas essential for breathing

5

Biological catalyst

6

Gas form of a liquid

8

Push or pull on an object

9

Nerve cell in the brain