| 单词 | demonstrator |
| 释义 | demonstrator /dem"euhn stray'teuhr/, n. 1. a person or thing that demonstrates. 2. Also, demonstrant. a person who takes part in a public demonstration, as by marching or picketing. 3. a person who explains orteaches by practical demonstrations. 4. a person who exhibits the use and application of (a product, service, etc.) to a prospective customer. 5. the product, device, machine, etc., actually used in demonstrations to purchasers or prospective customers: They sold the demonstrator at half price. [1605-15; < L demonstrator, equiv. to demonstra(re) (see DEMONSTRATE) + -tor -TOR] |
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