The human ear can tolerate noise up to 85 decibels without damage.

人类耳朵能忍受的最大安全 85 。

For reference, a space shuttle launch only reaches up to 170 decibels.

作为参考，航天飞机发射的仅为170。

Higher decibels (dB) are your worst enemy.

高你最大的敌人。

He and the Occupational Safety and Health Administration have some concrete decibel recommendations.

医生跟职业安全与安全管理局有给予具体的数据建议。

As you all know, the normal noise threshold for private housing is 55 decibels.

大家都知道，私人房屋的正常阈值55。

At this site, the levels have been recorded as high as 67 decibels.

在这个地方，记录的量高达67。

We're probably sitting at probably 65 decibels right now.

现在的大概65。

When it's at about 75, 80 decibels, I'd say a jet engine.

当达到75到80时，我觉得就像喷气发动机发出的。

Historically, experts recommended limiting environmental noise exposure to 70 decibels, averaged over a 24-hour period.

历史上，专家建议将环暴露限制在 70 ，平均在 24 小时内。

Even listening to continual noise above 70 decibels can damage hearing over time, experts say.

专家说，即使连续听超过70的，随着时间的推移也会损害听力。

The Krakatoa eruption is said to have reached upwards of 310 decibels at its loudest.

据说喀拉喀托火山爆发的最大达到310以上。

At 125 decibels, his short but startling songs are louder than a jackhammer.

125，它那短促但惊人的歌比手提钻的还大。

The sounds of European and American sirens are at the same decibel level, or loudness.

欧洲和美国的警报相同，即响度一样。

Environmental health regulations are that nothing louder than 85 decibels is allowed.

环卫生法规规定，应控制在85以内。

A motorcycle produces about 95 decibels of noise.

一辆摩托车产生大约95的。

So, Neil you just mentioned 85 decibels.

尼尔，你刚提到了85。

Under 71 decibels is considered quiet.

低于71择认为安静的。

Even over 100 miles away from Krakatoa, the noise measured in at over 170 decibels.

即使在距离喀拉喀托100英里的地方，也超过了170。

The letters are an abbreviation for decibels, which are used to measure how loud a sound is.

这些字母的缩写, 它用来衡量的大小。

But let's kick off with a question about the measurement of sound, which is in units called decibels.

但让我们从一个有关测量的问题开始，的单位。