N-COUNT 示威者;示威游行(或集会)者 Demonstrators are people who are marching or gathering somewhere to show their opposition to something or their support for something.
I saw the police using tear gas to try and break up a crowd of demonstrators. 我看见警察正试图用催泪弹驱散一群示威者。
示范者;演示者 A demonstrator is a person who shows people how something works or how to do something.
N-COUNT 样品;试用品 A demonstrator is an item for sale that customers can use and test so they can decide whether they want to buy it.
Saab dealers are currently giving away unaccompanied 24-hour test drives in posh demonstrator models. 萨博汽车的经销商目前正推出高档样品车无人陪同的 24 小时试驾活动。