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unprecedented [ʌn ˈpresɪdentɪd]
序号
907
英⽂释义
adj. that has never happened, been done or been known before
中⽂释义
adj. 空前的；前所未有的
扩展
前缀：pre-表示before词根：ced, ceed表示go antecedent adj. 以前的
（ante=before）
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