一千多年来，书的书页都是用兽皮制作的。

For more than a thousand years, the pages of books were made from animal skin.

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它是由兽皮做的。

It is made of animal skins.

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这个包是兽皮做的。

The bag was made of hide.

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销售兽皮是违法的。

Selling the fell is illegal.

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世界上有些地方，小船是用兽皮绷在一个木头架子上造成的。

The wreckage of a wooden ship was dredged up from the harbour bottom.

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世界上有些地方，小船是用兽皮绷在一个木头架子上造成的。

The wreckage of a wooden ship was dredged up from the harbour bottom.

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