n.蜂音器；翁翁作聲的東西；信號(hào)手；門鈴；汽笛
I pressed the buzzer to his house and waited. 我按了他家的門鈴,然後等著。
The buzzer sounds.We reluctantly make our way to the shopfloor. 汽笛響了，我們不情愿地向著車間走去。
指示器
