alarm clock

noun
🔊/əˈlɑːm klɒk/
🔊/əˈlɑːrm klɑːk/
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  1. a clock that you can set to ring a bell, etc. at a particular time and wake you up闹钟
    • I set the alarm clock for 7 o'clock.我把闹钟定在 7 点钟闹响。🔊🔊
    see also alarm (3)
    Extra Examples
    • I've set my alarm clock for six tomorrow.我已经把闹钟定到了明早 6 点。
    • My alarm clock didn't go off this morning.我的闹钟今天早上没有响。