demonstrator
US /ˈdem.ən.streɪ.t̬ɚ/
UK /ˈdem.ən.streɪ.t̬ɚ/
名词
1.
示威者
a person who explains how something works or how to do something:
示例:
•
A demonstrator was showing customers how the food processor worked.
在 Lingoland 学习这个单词
示威者
a person who explains how something works or how to do something: