demonstrator
n. 示威者；示范者
近义词：teacher，protester，supporter，activist，campaigner，lobbyist，marcher，presenter，instructor，tutor，trainer，expounder，
英英释义
Noun
- a teacher or teacher's assistant who demonstrates the principles that are being taught
- someone who demonstrates an article to a prospective buyer
- someone who participates in a public display of group feeling
例句
用作名词(n.)
- A surge of demonstrators broke through the fence.汹涌而来的示威者冲破了围栏。
- The police estimated the number of demonstrators at about 2000.警察当局估计游行的人数为2000人。
- The demonstrator should indicate the degree of this reliability.验证者应该指出这种可靠的程度。