点击下方单词,选择对的这个单词
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名词
1. 蜂鸣器A buzzer is an electrical device that is used to make a buzzing sound for example, to attract someone's attention.
1. a signaling device that makes a buzzing sound
2. a push button at an outer door that gives a ringing or buzzing signal when pushed
Synonym: doorbellbell
多通过句子记忆单词，而不是单独死记硬背。
