名词
中文翻译：石墨
同义词：
['carbon black', 'graphite powder例句：1. The graphite isused in the production of pencils andpens.（石墨用于生产铅笔和钢笔。）']
例句：
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1. The graphite isused in the production of pencils andpens.
石墨用于生产铅笔和钢笔。
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2.The graphite was extracted from the mineraldeposits in the area.
石墨是从该地区的矿床中提取出来的。
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3. The graphite has a high melting point andcan be used as an electrical insulator.
石墨具有高熔点，可以用作电绝缘体。