low noise

例句：

1. 1. The low noise of the wind through the trees was soothing.
   风吹过树林时发出的低噪音令人感到宁静。
2. 2. The low noise of the generator was drowned out by the roar of the engine.
   发电机的低噪音被发动机的轰鸣声淹没了。
3. 3. The low noise of the traffic in the city center was almost deafening.
   市中心交通的低噪音几乎让人听不见。