imperfection
/ˌɪmpəˈfekʃn; ˌɪmpɚ`fɛkʃən/ n
1 [U] being imperfect 不完美
My father never tolerated imperfection. 我父亲要求一切事情非尽善尽美不可.
2 [C] fault or defect that makes sb/sth imperfect; blemish 缺点; 瑕疵
The only slight imperfection in this painting is a scratch in the corner. 这幅画唯一的小疵是在角落里有一道划痕.
the house's structural imperfections 房子结构上的缺陷.