名词
中文翻译：石化
同义词：
['lithification', 'petrifaction', 'harden例句：1. The rock has been lithified over millions of years.（这块岩石已经石化了数百万年。）']
例句：
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1. The rock has been lithified over millions of years.
这块岩石已经石化了数百万年。
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2. The process of lithification is slow and requires a long time.
石化的过程很慢，需要很长时间。
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3.The fossils found in the cave are evidence of lithification.
洞穴中发现的化石是石化的证据。