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sectarian + noun
形容词用法：sectarian 作定语修饰名词，意为“宗派的；教派的”。
The country was torn apart by sectarian violence.
这个国家因宗派暴力而四分五裂。
宗派的；教派的
先理解核心含义，再看它在真实句子里的用法。
宗派的；教派的
relating to or characteristic of a sect or sects
The country was torn apart by sectarian violence.
这个国家因宗派暴力而四分五裂。
宗派的；与宗派有关的；偏袒宗派的。
Of, relating to, or partial to a sect.
教条主义的或党派性的。
Dogmatic or partisan.
狭隘的或心胸狭隘的。
Parochial or narrow-minded.
顽固偏执的。
Bigoted.
The two schools were divided by old sectarian differences, but the students now eat lunch together.
这两所学校曾因旧的宗派分歧而分隔，但现在学生们一起共进午餐。
His views are too sectarian to win support from people outside his own group.
他的观点过于偏狭，无法赢得本群体以外人士的支持。
The journalist wrote a fair report and refused to take a sectarian position.
这名记者撰写了公正的报道，拒绝采取宗派立场。
形容词用法：sectarian 作定语修饰名词，意为“宗派的；教派的”。
The country was torn apart by sectarian violence.
这个国家因宗派暴力而四分五裂。
形容词用法：sectarian 作表语，说明主语具有宗派性，可被 deeply 等副词修饰。
The conflict is sectarian.
这场冲突是宗派性质的。
名词用法：sectarian 可作名词，指“宗派成员；闹宗派的人”，复数形式为 sectarians。
He is a sectarian who refuses to compromise.
他是一个拒绝妥协的宗派成员。
Not this
The sect violence is getting worse.
Use this
The sectarian violence is getting worse.
sect 是名词，表示“教派、宗派”，不能直接修饰另一个名词；作定语表示“宗派的”应该用形容词 sectarian。改后保持了原意，语法正确。
Not this
There are many sectarian in the crowd.
Use this
There are many sectarians in the crowd.
sectarian 作可数名词时意思是“宗派成员”，复数形式必须加 -s。原句把它当作不可数名词使用，缺少复数标记，不符合英语语法。
Not this
He is a sectarian.
Use this
He is sectarian.
sectarian 作形容词表示“偏狭的、宗派的”，作可数名词则指“宗派成员”，两者含义不同。受汉语影响，学习者容易加 a 把它当成名词；这里想表达“他这个人很偏狭”应该用形容词作表语，不加 a。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
宗派暴力
Sectarian violence has claimed many lives in the region.
宗派暴力已在该地区夺去许多生命。
宗派紧张局势
Sectarian tensions have been rising in the capital.
首都的宗派紧张局势一直在加剧。
宗派分歧
The sectarian divide runs deep in the community.
宗派分歧在这个社区根深蒂固。
宗派仇恨
Years of sectarian hatred have made peace difficult to achieve.
多年的宗派仇恨使和平难以实现。
宗派利益
They put sectarian interests above the public good.
他们把宗派利益置于公共利益之上。
宗派偏见
The report accused the committee of sectarian bias.
该报告指责委员会存在宗派偏见。
Use sectarian naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
sect（宗派）+arian（人）——宗派里的人，眼光偏狭，只认本派。
语域：formal 常见场景：宗教冲突报道、政治派系分析、历史学术讨论 sectarian 作形容词时通常用于正式或书面语，多出现在宗教冲突、政治派系或历史分析等语境；日常口语中较少使用，常用 religious 或 factional 替代。
名词复数形式为 sectarians。
Dictionary facts from ECDICT, WIKTIONARY.