噪音值是在无音室中的测量值。
增加了：非常粗糙的第一洞洞。还有更多的噪音值做。
Added: VERY rough first draft of caves. Still more to do with the noise values yet.
渔船上24小时工作环境的噪音值不应超过80分贝，但是发动机操作工经常暴露在噪音为88分贝和108分贝之间。
Noise levels in a 24 hour working environment, as occurs in fishing vessels, should not exceed 80 dB. But engine operators were found to be exposed to noise levels ranging between 88 dB and 108 dB.
渔船上24小时工作环境的噪音值不应超过80分贝，但是发动机操作工经常暴露在噪音为88分贝和108分贝之间。
Noise levels in a 24 hour working environment, as occurs in fishing vessels, should not exceed 80 dB. But engine operators were found to be exposed to noise levels ranging between 88 dB and 108 dB.
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