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英语单词

chertification是什么意思

chertification

英[tʃɜ:tɪfɪ'keɪʃən] 美[tʃɜ:tɪfɪ'keɪʃən]
  • n.燧石化
  • 网络解释.燧石化;燧石化作用





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考试词汇

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分类词汇

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频率词汇

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单词首字母

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