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unspecified + noun
unspecified 作定语时，常与 number、amount、date、location 等名词搭配，强调未说明具体细节。
An unspecified number of people were affected by the change.
数量未明确说明的人受到了这一变化的影响。
未特别指出的；未明确说明的
先理解核心含义，再看它在真实句子里的用法。
未特别指出的；未明确说明的
not stated explicitly or in detail
An unspecified number of people were affected by the change.
数量未明确说明的人受到了这一变化的影响。
未指明的；未详细说明的；未充分评论的
Not specified; not thoroughly explained or detailed; not adequately commented.
The recipe asks for an unspecified amount of salt, so add it to taste.
食谱要求加入未特别指明的盐量，所以请按口味添加。
She was hired for an unspecified project and will learn the details next week.
她被录用的项目尚未明确说明，下周她才会知道细节。
The contract left the delivery date unspecified, which worried the client.
合同未明确写明交货日期，这让客户很担心。
unspecified 作定语时，常与 number、amount、date、location 等名词搭配，强调未说明具体细节。
An unspecified number of people were affected by the change.
数量未明确说明的人受到了这一变化的影响。
remain unspecified 表示“仍然未明确”，常用于正式或书面语境。
The exact date of the meeting remains unspecified.
会议的确切日期仍未明确说明。
leave sth unspecified 意为“让某事未作明确说明”，宾语可放在 leave 和 unspecified 之间。
The contract leaves the payment terms unspecified.
合同未明确说明付款条款。
Not this
The contract unspecified the deadline.
Use this
The contract left the deadline unspecified.
unspecified 是形容词，不是动词，不能直接带宾语。表示“未指明”可以用 leave + 宾语 + unspecified（或 did not specify），所以应把 unspecified 放在宾语后作补语。
Not this
We agreed to meet at a not specified place.
Use this
We agreed to meet at an unspecified place.
not specified 是“not + 过去分词”构成的短语，作定语时通常后置或作表语，不能直接放在名词前；名词前作定语应用形容词 unspecified。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
未说明的原因
She declined the offer for unspecified reasons.
她因未说明的原因谢绝了那个提议。
未指明的地点
The package was delivered to an unspecified location.
包裹被送到了未指明的地点。
未确定的日期
The trial was adjourned to an unspecified date.
审判被延期到未确定的日期。
未说明的金额
The company donated an unspecified amount to charity.
公司向慈善机构捐赠了一笔未说明金额的款项。
仍未明确说明
The terms of the agreement remain unspecified.
协议的条款仍未明确说明。
不具体说明
The report leaves the identity of the witness unspecified.
报告未具体说明证人的身份。
Use unspecified naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记法：specified是‘明确指出的’，加否定前缀un-就是‘未特别指定’——想象表格里空着的那一栏，写着unspecified。
语域：mixed 常见场景：法律/合同文本、新闻报道、学术写作 该词通常用于书面和较为正式的场合，如法律、学术或新闻报道；日常口语中更常说 not specified。具体语气取决于搭配，整体偏正式但非极端正式。
能和 unspecified 押韵的是 specified（重读音节 /spesɪfaɪd/ 一致）；其余几个词虽以 -ified 结尾、拼写相似，但重读元音不同，发音并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.