permissible noise level

例句：

1. 1. The factory is required to maintaina permissible noise level throughout theday.
   工厂被要求在整个工作日保持可容许的噪音水平。
2. 2. Thegovernment has set a permissible noise level for outdoorevents.
   政府为户外活动设定了一个可容许的噪音水平。
3. 3. Theconstruction site was subject toa permissible noise levelduring the night shift.
   在夜班期间，施工现场受到一个可容许的噪音水平的约束。