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Watch Later 0:44

1920上學期考試

By: t1502, Views: 446

考試

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1920上學期考試1

By: t1502, Views: 581

考試

Watch Later 3:31

1920上學期考試2

By: t1502, Views: 440

考試

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1920上學期考試3

By: t1502, Views: 474

考試

Watch Later 4:11

1920上學期考試4

By: t1502, Views: 449

考試

Watch Later 2:35

Transverse wave 5

By: t2208, Views: 114

Transverse wave 5

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Transverse wave 4

By: t2208, Views: 121

Transverse wave 4

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Transverse wave 3

By: t2208, Views: 110

Transverse wave 3

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Transverse wave 2

By: t2208, Views: 123

Transverse wave 2

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