Mechanized coal mining treatment process has been proposed, and some measures have been given according to producing gases, spontaneous combustion and dust calamity.

提出了机械化采煤工艺流程并对新的采煤方法所产生的瓦斯、自然发火、粉尘灾害提出了具体的防治措施。

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Some argued that humans weren't producing enough greenhouse gases, while others claimed the effects would be tiny.

一些人认为人类没有产生足够的温室气体，而另一些人则声称影响很小。

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That means that the 9 billion people who will be living on the planet in 2050 must be producing, on average, no more than about two tonnes of greenhouse gases per year each.

那意味着到2050年生活在地球上的90亿人们平均每人每年产生的温室气体不能高于2吨。

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Human activities are producing increased amounts of carbon dioxide and other gases.

VOA: special.2010.01.19

Agricultural experts blame a number of farm activities for producing greenhouse gases.

VOA: special.2010.01.05

Nuclear energy is a clean resource, producing no carbon gases.

VOA: special.2011.03.18

The researchers found that growing mealworms released less greenhouse gases than producing cow milk, chicken, pork and beef.

MSN: Mealworms: They're not just for breakfast anymore...

Mr. CHRIS BASKIND: Everything seems to be being reduced to how much carbon dioxide am I producing, or what kind of greenhouse gases we should be finding a way to sequester.

NPR: Environmentalists Point Beyond Global Warming

These gases are then used to clean up smog-producing nitrogen oxides, or NOx.

FORBES: Clearing the Air