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an imperfection in [sth]
an imperfection 指具体的一个缺陷，介词 in 后接所在的事物或范围。
An imperfection in the design caused the product to fail.
设计中的一个缺陷导致产品失败。
不完美；不完善
先理解核心含义，再看它在真实句子里的用法。
不完美；不完善
the state of being imperfect or not perfect
An imperfection in the design caused the product to fail.
设计中的一个缺陷导致产品失败。
不完美；缺陷；瑕疵。
Those qualities or features that are imperfect; the characteristic, state, or quality of being imperfect.
使其他事物不够完美的事物；瑕疵、杂质、错误等。
Something that makes something else less than perfect; a blemish, impurity, error, etc.
The tiny imperfection in the glass made it less valuable to collectors.
玻璃上微小的瑕疵使它对于收藏家来说价值降低了。
She learned to accept her own imperfections instead of trying to be perfect.
她学会了接受自己的不完美之处，而不是追求完美。
Despite the small imperfection in the stitching, the dress looked beautiful.
尽管针脚处有一点小瑕疵，这条连衣裙看起来依然很美。
an imperfection 指具体的一个缺陷，介词 in 后接所在的事物或范围。
An imperfection in the design caused the product to fail.
设计中的一个缺陷导致产品失败。
这是用 there are 引出多个瑕疵的句式；imperfection 是可数名词，复数直接加 -s。
There are imperfections in the metal that a scanner can detect.
金属中有一些瑕疵，扫描仪可以检测到。
the imperfection of ... 表示不完美这一抽象性质，后接名词或名词短语。
The imperfection of the recording makes it unsuitable for broadcast.
这盘录音的不完美使它不适合播出。
Not this
This solution is imperfection.
Use this
This solution is imperfect.
imperfection 是名词，表示“不完美、缺点”；表达“某物不完美”应用形容词 imperfect，不能用名词作表语。
Not this
There is a imperfection on the surface.
Use this
There is an imperfection on the surface.
imperfection 表示“瑕疵、缺陷”时可数，且以元音音素 /ɪ/ 开头，不定冠词要用 an，不能用 a。
Not this
The report has many imperfection.
Use this
The report has many imperfections.
imperfection 表示具体缺陷时可数，many 后必须接复数形式，所以要用 imperfections。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
小瑕疵；轻微缺陷
The vase was beautiful except for a minor imperfection in the glaze.
这只花瓶很漂亮，只是釉面上有一处小瑕疵。
人的不完美；人性缺陷
The film celebrates human imperfection rather than ideal heroes.
这部电影赞美人的不完美，而不是理想化的英雄。
接受不完美
She learned to accept imperfection in her work.
她学会了接受自己作品中的不完美。
外观瑕疵；表面缺陷
The car is mechanically sound, but it has a few cosmetic imperfections.
这辆车机械性能良好，但有一些外观瑕疵。
表面缺陷
Ceramics are inspected for surface imperfections before firing.
陶瓷在烧制前要检查表面缺陷。
固有的不完善；内在缺陷
Every system has inherent imperfections that cannot be fully eliminated.
每个系统都有无法完全消除的固有缺陷。
不完美即是美丽，疯狂即是天才，而且绝对荒唐也比绝对无聊要好。
A line spoken by Marilyn Monroe in the 2011 film My Week with Marilyn; widely shared online as a Monroe quote, it celebrates imperfection as part of beauty.
出自2011年电影《我与梦露的一周》中玛丽莲·梦露的台词；这句台词常被当作梦露的名言在网上流传，赞美不完美也是一种美。
Use imperfection naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 im- 想成“不”，perfection 是“完美”；一件完美的东西上多了一小点瑕疵，就成了 imperfection（不完美、缺点）。
语域：neutral 常见场景：书面描述或评论、产品说明与质检、正式讨论个人或作品的不足 该词为中性偏正式用词，多用于书面或说明性语境；口语中有时更常说 flaw 或 problem，但 imperfection 本身并不显得生硬。
这些词的重读部分都以 /-ekʃən/ 结尾（如 -fection、-xion 的 x 读作 /kʃ/），因此与 imperfection 押韵。注意拼写看似接近但发音不同的词，如 deception /dɪˈsepʃən/（/p/ 而非 /k/），并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.