duct noise

例句：

1. 1. The duct noise from the air conditioner was so loud that it woke me up in the middle of the night.
   空调的管道噪声太吵了，以至于我在半夜被吵醒了。
2. 2.The engineers were trying to figure out how to reduce the duct noise in the factory.
   工程师们正在尝试找出减少工厂内管道噪声的方法。
3. 3. The sound of the duct noise made it hard for me to concentrate on the lecture.
   管道噪声的声音让我很难集中注意力听讲座。