demonstrator
英 ['demənstreɪtə]
美['dɛmən'stretɚ]
- n. 示威者；论证者；指示者；证明者
英英释意
- 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
- 3. someone who participates in a public display of group feeling