demonstrator

漢語翻譯

英文解釋：

名詞 demonstrator:

1. a teacher or teacher's assistant who demonstrates the principles that are being taught
2. someone who demonstrates an article to a prospective buyer
   同義詞：sales demonstrator
3. someone who participates in a public display of group feeling
   同義詞：protester

例句：

1. The police estimated the number of demonstrators at about2000.
   警察估計示威遊行的人數大約為2000人。
2. A surge of demonstrators broke through the fence.
   洶湧而來的示威者衝破了圍欄。