imperfectionn.
英 ɪmpə'fekʃ(ə)n | 美 ,ɪmpɚ'fɛkʃən
中文n. 不完美；瑕疵；缺点
词根词源
imperfection (n.)late 14c., from Old French imperfeccion (12c.) and directly from Late Latin imperfectionem (nominative imperfectio), from imperfectus (see imperfect).
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