The noise pollution reached a high decibel level.
噪音污染达到了很高分贝。
Alarm has three switch positions which allow setting to a high decibel for noisy areas, low for quiet environments, or off (muted) for silent visual fl ashing LED operation.
警报声音有三个开关位置，在嘈杂地区可以将声音设置为高分贝，在安静环境中设置低分贝，还可以设置静音、仅使用LED闪烁的视觉操作。
Compared with metal pipe clean health products need further sound insulation is it reduce high-speed noise decibel that rivers produce count relatively to come.
与金属管相比，凯佳产品不需进一步隔音来降低相对高速水流所产生的噪音分贝数。
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