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1.The elevator horn was ringing, signaling that the doors were about to open.
电梯喇叭正在响，预示着门即将打开。
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2. The elevator horn woke up the entire building, as everyone rushed out to see what was happening.
电梯喇叭唤醒了整个大楼，因为每个人都急忙跑出来看发生了什么事。
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3. The elevator horn was a constant reminder of the importance of time management in our daily lives.
电梯喇叭是我们日常生活中时间管理重要性的一个不断提醒。