1
demonstrator of sth
表示示范者，后接具体领域或内容。
He was a demonstrator of scientific principles at the university.
他在大学里是科学原理的示范者。
示威者；抗议者
先理解核心含义，再看它在真实句子里的用法。
示威者；抗议者
a person who participates in a public protest or demonstration
He was a demonstrator of scientific principles at the university.
他在大学里是科学原理的示范者。
演示任何事物或确凿证明某事的人
One who demonstrates anything, or proves beyond doubt.
演示所教原理的教师或教师助理
a teacher or teacher's assistant who demonstrates the principles that are being taught
食指
The forefinger.
向潜在买家演示商品的人
someone who demonstrates an article to a prospective buyer
The demonstrators gathered in the square to call for better working conditions.
示威者聚集在广场上，要求改善工作条件。
One demonstrator held up a sign while the police watched from the side.
一名示威者举起标语牌，警察在旁边观看。
Many demonstrators marched peacefully through the city center.
许多示威者和平地穿过市中心游行。
表示示范者，后接具体领域或内容。
He was a demonstrator of scientific principles at the university.
他在大学里是科学原理的示范者。
表示示威者，against表反对，for表支持。
Thousands of demonstrators against the new law gathered in the square.
成千上万反对新法律的示威者聚集在广场上。
表示在特定场所的示范者或助教。
She worked as a demonstrator in chemistry labs.
她在化学实验室担任示教者。
Not this
He is a demonstrator in the protest.
Use this
He is a demonstrator at the protest.
中文学习者常将介词用错，表示‘在抗议中’应用‘at’而非‘in’。
Not this
There were many demonstration in the street.
Use this
There were many demonstrators in the street.
混淆名词‘demonstration’（示威活动）与‘demonstrator’（示威者），导致数量表达错误。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
和平示威者
The police handled the peaceful demonstrators with restraint.
警察克制地对待和平示威者。
反政府示威者
Hundreds of anti-government demonstrators gathered in the square.
数百名反政府示威者聚集在广场上。
学生示威者
Student demonstrators marched through the campus.
学生示威者穿过校园游行。
Use demonstrator naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：'示威者'就是'展示（demonstrate）观点的人'，-or表示人。
register: mixed; typical settings: protests, political events; classroom, laboratory demonstrations; note_zh: demonstrator 一词有两种常见语境：政治抗议中的示威者（多用于新闻报道）以及教学或展示中的演示者（比较常见于教育或产品演示）。前者语域偏正式或新闻，后者偏学术或专业。根据具体场景选择恰当含义。
All listed words share the ending /-eɪtɚ/ and rhyme with 'demonstrator'.
Dictionary facts from ECDICT, WIKTIONARY.