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9
5
2
8
4
3
1
7
6

横向

1

Blocking of light by a celestial body

5

Preserved remains of ancient life

6

Measure of matter in an object

7

Unit of force

纵向

2

Gas essential for breathing

3

Second lightest element

4

Curved glass that refracts light

8

Push or pull on an object

9

The Red Planet