单词	imperforation
释义	imperforation noun im·​perforation (¦)im, əm+ : the quality or state of being without perforation Word History Etymology French, from in- in- entry 1 + perforation
随便看	pentlandite pentlandites Pentlatch pentlatch pentlatches pentobarbital pentobarbitals pentobarbitone pentobarbitones pentode pentodes pentolite pentomic pentosan pentosanes pentosans pentose pentose nucleic acid pentoses Pentothal pentothals pentoxide pentoxides Pentremites pentremitid

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