Science Discovery

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7
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横向

1

Biological catalyst

4

Center of an atom or cell

5

Glass that splits light into spectrum

8

Precious yellow metallic element

10

Nerve cell in the brain

纵向

2

Natural satellite of Earth

3

Measure of matter in an object

4

Unit of force

6

Substance with pH above 7

7

Compound containing oxygen

9

Icy body with a tail near the sun