名词
中文翻译：纸的纤维
同义词：
['paper fiber', 'paper pulp']
例句：
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1.The grain of paper is the first thing that catches my eye when I open a new notebook.
当我打开一本新笔记本时，纸张的纤维是第一眼吸引我的。
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2.The grain of paper was so thin that it could easily be torn by a fingernail.
纸张的纤维非常薄，很容易被指甲撕破。
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3. The grain of paper was used to write letters and documents in ancient times.
在古代，纸张的纤维被用来书写信件和文件。