buzzer
n. 蜂鸣器;嗡嗡作声的东西;信号手
复数 buzzers
例句
The buzzer sounded in Daniel's office.
丹尼尔办公室的蜂鸣器响了起来。
《柯林斯英汉双解大词典》
She rang a buzzer at the information desk.
她按响了信息台上的一只蜂鸣器。
He missed a three-point attempt at the buzzer.
终场哨响时,他投三分球未中。
《牛津词典》