noise abatement

例句：

1. 1. The noise abates as the night falls.
   随着夜幕降临，噪音逐渐减弱。
2. 2. Theair pollution has been abating for years.
   空气污染已经持续了几年有所改善。
3. 3. The governmentis working to abate the effects ofclimate change.
   政府正在努力减轻气候变化的影响。