demonstrator

n.

游行示威者；证明者，示范者；实物说明者；

复数：demonstrators

1. A surge of demonstrators broke through the fence.
   汹涌而来的示威者冲破了围栏。
2. The police estimated the number of demonstrators at about 2000.
   警察当局估计游行的人数为2000人。
3. The demonstrator should indicate the degree of this reliability.
   验证者应该指出这种可靠的程度。

ANTISTATIC DEMONSTRATOR
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