buzzer
/ˈbʌzɚ/ 名词 C1中文： 蜂鸣器、蜂音器
- One who, or that which, buzzes; an insect that buzzes.
- A device that makes a buzzing sound. · If you think you know the answer to the question, hit the buzzer as fast as you can.
- A police badge.
- A run scored from an overthrow.
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