1
a detainee + at/in + [place]
at 用于具体的机构或建筑物，in 用于较大的地理范围。
The detainees at the immigration center have not seen a judge.
移民中心里的被拘留者没有见过法官。
被拘留者；被扣押者
先理解核心含义，再看它在真实句子里的用法。
被拘留者；被扣押者
a person held in custody
The detainees at the immigration center have not seen a judge.
移民中心里的被拘留者没有见过法官。
被拘留者,尤指在押人员。
Someone who is detained, especially in custody or confinement.
The detainee was allowed to make one phone call to a lawyer.
被拘留者被允许给律师打一次电话。
Police questioned the detainee for several hours before releasing him.
警方在释放他之前盘问了被拘留者几个小时。
Each detainee received a blanket and a meal during the night.
每位被拘留者在夜间都得到了一条毯子和一顿饭。
at 用于具体的机构或建筑物，in 用于较大的地理范围。
The detainees at the immigration center have not seen a judge.
移民中心里的被拘留者没有见过法官。
held 是过去分词作后置定语，相当于定语从句 who are held。
The detainees held in this prison are all awaiting trial.
关押在这座监狱里的被拘留者都在等待审判。
who 指人，引导限制性定语从句，修饰 detainees。
Detainees who claim they are innocent are often ignored.
声称自己无辜的被拘留者常常被忽视。
Not this
The camp held more than 100 detainee.
Use this
The camp held more than 100 detainees.
detainee 是可数名词，复数形式为 detainees；在 more than 100 后必须使用复数形式。
Not this
He was detainee for two months before being released.
Use this
He was a detainee for two months before being released.
detainee 是单数可数名词，作表语时前面需要不定冠词 a；不能省略冠词直接说 was detainee。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
政治被拘留者
The organization works to free political detainees around the world.
该组织致力于释放世界各地的政治被拘留者。
释放被拘留者
The government ordered the release of all detainees after the ceasefire.
停火后，政府下令释放所有被拘留者。
拘留营
Conditions in the detainee camp were harsh and overcrowded.
拘留营里的条件恶劣且拥挤不堪。
虐待被拘留者
The investigation revealed widespread detainee abuse by prison guards.
调查揭露了狱警广泛虐待被拘留者的情况。
前被拘留者
A former detainee gave a detailed account of his years in custody.
一名前被拘留者详细讲述了他被关押多年的经历。
Use detainee naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
detain（拘留）＋后缀 -ee 表“被…的人”→被拘留者。联想：被拘留的人举手喊“ee”。
语域：formal 常见场景：法律文书、新闻报道 detainee 是正式用语，通常出现在法律文书、新闻报道或官方声明中，日常对话中较少使用。
detainee 是规则名词，复数形式为 detainees。
Dictionary facts from ECDICT, WIKTIONARY.