unprecedented

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unprecedented

1.In a kind of unprecedented（）， A Dream of Red Mansions depicts the decline of a hereditary aristocratic family2.Gong Zizhen raised the emphasis on the subjectivity of self to an unprecedented high level of importance.3.Ranking of Poetry became an unprecedented conclusion of classical Chinese literary theory.4.The moon-landing mission has been hailed as an unprecedented success. The underlined word “unprecedented” probably means “unknow5.The Black Death , an unprecedented（） in history, had a great impact on the European culture.6.In the history of Dynasty, silk production entered its prime period, with output and quality both reaching unprecedented levels.