名词
中文翻译：Unknown
同义词：
['papyrus layer', 'papyrus layer']
例句：
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1. The ancient Egyptians used parchment to write their history.
古埃及人用羊皮纸记录他们的史书。
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2. This manuscript is made of parchment and has been preserved for centuries.
这部手稿是用羊皮纸制作的，保存了数百年。
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3. The archaeologists discovered a parchment layer in the ruins.
考古学家在遗址中发现了一份羊皮纸层。