1. 不完美的;有缺点的;有瑕疵的
Something that is imperfect has faults and is not exactly as you would like it to be.

e.g. We live in an imperfect world...
我们生活在一个并不完美的世界上。
e.g. They have a huge selection of perfect, slightly imperfect and discontinued cookers, fridges and so on.
他们有大量完好的、略有瑕疵的以及已停产的炊具、冰箱和其他货品可供选择。

noun

1. a tense of verbs used in describing action that is on-going

Synonym: progressiveprogressive tenseimperfect tensecontinuous tense