One breakthrough occurred when the government signed a pact to check pollutant emissions on all motor vehicles.

政府签署文件检所有机动车辆污染物质排放量，算是一个突破。

Let's look at a TV factory that pollutes a river with toxic chemicals.

我们来看一家用有毒化学物质污染河流的电视工厂。

These are amounts of substances, or pollutants, within something.

它们是某物内物质或污染物的含量。

Nutrient pollution, the chemical runoff from farms, is a much bigger worry, he believes.

他认为，更令人担忧的是来自农场的化学物质污染。

The materials pollute the world's oceans, affect wildlife, and turn up in drinking water.

这些物质污染了全球海洋，影响野生生物，并出现在饮用水。

Oil, gasoline and pesticides, and other toxic agents can contaminate floodwater.

石油、汽油、杀虫剂以及其他有毒物质可能污染洪水。

He means amounts of substances, pollutants, found in something, which here is the air.

他指的是在某物发现的大量物质，污染物，这里是指空气。

This also keeps the air, soil, water and crops free from chemicals.

同时还可以让空气、土壤、水以及农作物不受 化学物质的污染。

So we're always trying to find the authentic in a saturated world that's kinda contaminated by materialism.

所以我们总是试图在一个被物质主义污染的饱和世界真实的东西。

Definitely don't wander into the forest, where the trees are contaminated with radioactivity.

绝对不要走进森林，那里的树木都被放射性物质污染了。

There was pollution everywhere, and toxic substances were seeping into the soil.

处都是污染， 有毒物质渗入土壤。

The water could have other chemicals in it – other things that may pollute the water.

水可能含有其他化学物质——其他可能污染水的物质。

Those thrusters left foreign chemicals on the ground, contaminating soil samples.

这些推进器在地面上留下了外来化学物质，污染了土壤样本。

Traditional burial consumes materials like metal, stone, and concrete, and can pollute soil and groundwater with toxic chemicals.

传统的埋葬会消耗金属、石头和混凝土等材料，并且会用有毒化学物质污染土壤和地下水。

One was that the fragments' rapid recovery had left little time for them to be contaminated by terrestrial chemistry.

一是碎片的快速回收几乎没有时间让它们受地球化学物质的污染。

And pollutants are the actual substances that cause pollution… To focus the mind means to concentrate on one idea or thought.

污染物是造成污染的实际物质… … " 精神" 是指专注于一个观点或想法。

A team from Cambridge University have a plan to sidestep all of that polluting chemistry by reactivating this stuff: used cement.

剑桥大学的一个研究小组了一个方法，可以避免那些在生产水泥过程产生的污染化学物质：重熔废水泥。

Then the water is put through barriers with very small openings, or pores, that remove solids and dangerous materials known as contaminants.

然后，水通过带有非常小的开口或孔洞的屏障，以去除固体和被称为污染物的危险物质。

He said it was one way to reduce concentrations-he means amounts of substances, pollutants, found in something, which here is the air.

他说这是减少浓度的一种方式——他指的是某些东西发现的物质、污染物的量，这里指的是空气。

But he said if the water flow is too low, the dung could overwhelm the ecosystem and be a pollutant. Too much water and its value is diluted.

但他说如果河水流动太慢，粪便就会破坏生态系统，就成了污染物质，如果水太多，粪便的价值就会被稀释。