to make noise
bell
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→nao4zhong1 • nàozhōng
alarm clock
alarm
我 的 闹钟 是 用 来 叫 我 起床 的。
My alarm clock is used to wake me up.
我 昨晚 忘记 设定 闹钟 了。
I forgot to set my alarm clock last night.
我 的 闹钟 坏 了。
My alarm clock broke.