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a/an + (adj) + detective
detective 是可数名词，通常与冠词连用。
She is a famous detective.
她是一位著名的侦探。
警探；刑警
detectives — plural of detective
先理解核心含义，再看它在真实句子里的用法。
警探；刑警
A police officer whose job is to investigate crimes and gather evidence.
She is a famous detective.
她是一位著名的侦探。
负责收集证据和信息以侦破罪案的警官；调查员。
A police officer tasked with collecting evidence and information in order to solve a crime; an investigator.
调查罪案的警官
a police officer who investigates crimes
受雇查找公众无法获取的信息的人。
A person employed to find information not otherwise available to the public.
受雇获取公众不易获得信息的调查员
an investigator engaged or employed in obtaining information not easily available to the public
The detective carefully examined the clues at the crime scene.
侦探仔细检查了犯罪现场的线索。
She hired a private detective to find her missing brother.
她雇了一名私家侦探寻找失踪的弟弟。
A good detective must be patient and observant.
一位好侦探必须有耐心且善于观察。
detective 是可数名词，通常与冠词连用。
She is a famous detective.
她是一位著名的侦探。
detective 作定语修饰名词，表示与侦探相关的。
He enjoys reading detective novels.
他喜欢读侦探小说。
关系从句进一步说明侦探。
The detective who solved the case retired.
破案的那位侦探退休了。
Not this
He detective the case.
Use this
He investigated the case.
在英语中，'detective'是名词，意为'侦探'，不可用作动词。应使用动词'investigate'或'solve'。
Not this
I read a detective.
Use this
I read a detective novel.
中文里'读侦探'可指读侦探小说，但英语中'detective'指人，需加'novel'或'story'明确指代小说。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
私家侦探
She hired a private detective to find her missing brother.
她雇了一名私家侦探寻找失踪的弟弟。
侦探故事
I love reading detective stories by Agatha Christie.
我喜欢读阿加莎·克里斯蒂的侦探故事。
侦探工作
The case required a lot of detective work to solve.
这个案件需要大量的侦探工作来破解。
警探
The police detective questioned the suspect for hours.
警探审问了嫌疑人几个小时。
侦探事务所
He runs his own detective agency in the city center.
他在市中心经营自己的侦探事务所。
凶杀案侦探
The homicide detective examined the crime scene carefully.
凶杀案侦探仔细检查了犯罪现场。
扮演侦探（非正式地调查）
Stop playing detective and mind your own business.
别扮演侦探了，管好你自己的事吧。
纸上谈兵的侦探（指凭空推断却不亲身参与的人）
He's an armchair detective who thinks he can solve every crime from his living room.
他是个纸上谈兵的侦探，以为自己坐在客厅里就能破案。
侦查工作（常比喻仔细调查）
Solving this puzzle required some serious detective work.
解开这个谜题需要大量细致的侦查工作。
很简单，我亲爱的华生。
The detective solved the case with ease.
这位侦探轻松地解决了案件。
只要事实，女士。
The detective asked the witness to stick to the facts.
侦探要求目击者只陈述事实。
Use detectives naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
detect（发现）+ ive（人）→ 发现线索的人，即侦探。
中性词，常用于指警察中的侦探或一般调查员，适用于正式和非正式场合。
可数名词，指侦探
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.