So, Neil you just mentioned 85 decibels.

尼尔，你了85分贝。

Ah Well, it is actually 85 decibels, Georgina.

好吧，实际上是85分贝，乔治娜。

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

人类耳朵能忍受的最大全噪音是 85 分贝。

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

作为参考，航天飞机发射的声音仅为170分贝。

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声音达310分贝以上。

Under 71 decibels is considered quiet.

低于71分贝择认为是静的。

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

环境卫生法规规定，噪声应控制在85分贝以内。

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

125分贝，它那短促但惊人的歌声比手钻的声音还大。

You want to almost never hear a chainsaw which can top out at 120 decibels.

你一定无法想象电锯的声音会高达 120 分贝。

Exposure to anything above 85 decibels for too long can cause hearing loss.

暴露在高于85分贝环境下太久会导致力。

So, why would someone want to invent something louder than 154 decibels?

那为什么有人还想发明比154分贝还高的东西呢?

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，噪音也超过了170分贝。

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

这些字母是分贝的缩写, 它用来衡量声音的大小。

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声音测量的问题开始，声音的单位是分贝。

If noise levels at traffic lights went over 85 decibels, the lights would remain on red for longer!

如果交通信号灯检测噪音水平超过85分贝，亮红灯的时间就会更长！

When trains passed, the noise pollution in the classroom went from an average of 59 decibels to 89.

当地铁通过时，教室里的噪音污染从五十九分贝的平均值上升八十九分贝。

At 95 decibels, you only get four safe hours of listening.

在 95 分贝的话，你就只能四个小时才能在全范围。

Now I recognize that most of us don't think in decibel levels.

我猜我们大多数的人都不会留意声音分贝。

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

欧洲和美国的警报声分贝相同，即响度一样。

People who direct jet engines in landing and take-off and are subjected to 140 decibels of sound in one go.

指挥喷气式飞机着陆和起飞的人们要忍受140分贝的噪音。