demonstrator

/ˈdem.ən.streɪ.t̬ɚ/

名词

展示者，演示者，示范者
A demonstrator was showing customers how the food processor worked.
一个人在向顾客演示如何使用食品加工器。
示威者，游行者
Police arrested several of the demonstrators.
警察逮捕了数名示威者。