Hydrogen sulphide gas bubbles up from oil deposits in the Earth's crust.

气体从地壳内的油气储层中溢出。

Like hydrogen sulfide, which smells like rotten eggs.

比如，闻起来蛋。

They found hydrogen sulphide levels decreased in 80% of participants.

他们发现受试者口腔内的含量降低了80%。

The hydrogen sulfide reacted with oxygen in rainwater moving through the rock.

与流过岩石的雨水中的氧气反应。

Which is about a fifth as much H2S as you'd need to have stank breath.

而五倍这种浓度的才会产生口。

Hydrogen sulfide is a colorless gas that smells like rotten eggs.

是闻起来蛋的无色气体。

Fortunately for us, farts contain tiny amounts of it.

幸运的是，屁中含有极少量。

The hydrogen sulphide that these men must breathe in is 40 times the safe level.

他们吸进的是安全限度的四十倍。

The action of oil and natural gas created hydrogen sulfide in the limestone.

石油和天然气的作用在石灰岩中产生了。

At super high concentrations, it can be toxic like hydrogen sulfide.

在极高浓度下，和一样有毒性。

The gas is a hydrogen sulphide mix that corrodes every surface it lands on.

这种气体是一种的混合物，其所到之处，必受腐蚀。

Second, it's about what scientists say they've detected in the planet's clouds, hydrogen sulfide.

其次，这是科学家所说的，他们在地球的云层中发现了。

That distribution gives the sensor the sensitivity it needs to detect trace amounts of H2S.

这种分布方式让传感器拥有了检测微量所需的灵敏度。

To test the device, the researchers puffed it with different concentrations of hydrogen sulfide gas.

为了测试这个设备，研究人员使用了不同浓度的气体。

It warned some communities about high levels of hydrogen sulfide gas escaping from the rotting algae.

它警告一些社区注意从腐烂的海藻中释放出的高浓度的气体。

These gases are a death filled cocktail of hydrochloric acid, hydrogen, hydrogen sulfide, and sulfur dioxide.

这些气体是由盐酸、气、和二氧混合而成的致命混合物。

The earliest Earth was full of hydrogen, of hydrogen sulphate, had a lot of methane, some carbon dioxide.

最初地球上充满了、甲烷以及一些二氧碳。

But, as they watched the beakers, a bunch of the hydrogen sulfide seemed to be disappearing.

但是，当他们观察烧杯时，一束似乎正在消失。

In deep, dark ocean ecosystems, some bacteria use chemicals like hydrogen sulfide as their energy supply instead.

在深海、黑暗的海洋生态统中，一些细菌使用等学物质作为它们的能量供应。

And they spiked these exhalates with 1,000 parts per billion H2S.

他们在袋子里呼出的气中加入了十亿分之一千浓度的。