And that sulphuric acid is made by sulphur dioxide coming out of volcanoes on the surface.

这些酸来源于二产生于地表的火山。

There's water and there's sulphur dioxide.

这是水分子，这是二分子。

But there was no incentive for the power plants to stop emitting sulphur dioxide.

但发电厂没有动力停止排放二。

The burning of coal and heavy fuel oil produces a lot of sulphur dioxide.

燃烧煤炭和重油会产生大量的二。

Now, that's predominantly created by a gas called sulphur dioxide.

现在，这主要是由一种叫二的气体造成的。

Older volcanic rocks tend to emit less infrared, say the researchers, because carbon dioxide and sulphur dioxide in the planet's atmosphere weather the rocks and change their composition.

究员说，较旧的火山岩往往发出较少的红外，因为二碳和二在地球大气中使岩石风并改变它们的成分。

The researchers are also working with the regulator in Maharashtra, a neighbouring state, to introduce a market for sulphur dioxide, another pollutant.

究员还与邻近的马哈拉施特拉邦的监管机构合作，计划引入一个二（另一种污染物）的交易市场。

They're carrying devices that measure gases, especially sulphur dioxide, which can pose a danger to health and even be fatal.

他们携带测量气​​体的设备，尤其是二， 这可能对健康构成威胁， 甚至是致命的。

The cloud layer itself sits above the thick  CO2 and consists mainly of sulphur dioxide and sulphuric acid droplets.

云层本身位于厚厚的二碳之上，主要由二和酸滴构成。

For years, its power stations had been emitting large amounts of sulphur dioxide, which was falling back to Earth as acid rain, causing harm to plants, aquatic animals and infrastructure.

多年来，它的发电站一直在排放大量二，这些二以酸雨的形式回落到地球上，对植物、水生动物和基础设施造成伤害。

Sulphur dioxide and nitrogen oxide combine to form acid rain.

【form】二和氮物结合形成酸雨。

The rest of the gas is nitrogen, carbon dioxide, sulphur dioxide, methane, ammonia and hydrogen.

剩下的气体是氮气、二碳等气体。

In 1991, Pinatubo injected tens of millions of tons of sulphur dioxide gas into the stratosphere where it reflected some of the sun's light.

1991年，皮纳图博火山向平流层注入了数以千万吨计的二气体，这些气体反射了一部分太阳光。

The idea is to inject sulphur dioxide—or perhaps other chemicals such as calcium carbonate or powders made of aluminium or diamonds—not into the troposphere, but the stratosphere, which begins up to 20km above the surface.

这个想法是将酸盐——或者其他物质， 如碳酸钙或铝粉、钻石粉——注入到平流层而不是对流层，平流层从地表以上约20公里处开始。

The sulphur dioxide level in the air was 32 parts per billion.

【part】空气中二的含量是十亿分之三十二。

This would involve using sulphur or hydrogen sulphide aerosols so that sulphur dioxide would form clouds, which would, in turn, lead to a global dimming.

气雾剂的成分主要是或氢，这样一来二就会形成云层，因而就会实现全球变暗。

Sulphur dioxide is particularly influential because of how it combines with water to form sulphuric aerosols—a light-scattering haze which hangs in the sky.

二特别具有影响力，因为它与水结合形成酸气溶胶——一种悬浮在空中的散射光的霾。

Fumigants such as hydrogen cyanide, sulphur dioxide and DDT itself are now regarded in most places as too toxic to use.

氰氢、二和滴滴涕等熏蒸剂本身现在在大多数地方都被认为毒性太大而无法使用。