单词：demonstrator
[医] 示教者
n. someone who demonstrates an article to a prospective buyer
n. someone who participates in a public display of group feeling
demonstrator的用法和样例：
例句
- 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。
词汇搭配
- dynamic wheel demonstrator车轮动平衡表示器...
- demonstrator engine表演发动机
- voice operation demonstrator语言合成器,语言合成...
- dynamic demonstrator动态示教板
经典引文
An overalled woman demonstrator was exhibiting the merits of a patent coffee-strainer.
出自：C. Isherwood
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