source of carbon monoxide造句

Despite annual warnings about the many sources of carbon monoxide and how problems can be prevented and detected before it's too late, this product of combustion kills an estimated 2, 100 people who did not intend to die and sickens 10, 000 others in the United States each year.
Dawson said he deliberately withheld any reference to carbon monoxide in his first medical report because he wanted to give investigators a chance to search for a source of carbon monoxide at the cottage without alerting the Raynes household that the cause of death had been determined and that the investigators knew what they were looking for.
However, the issues are complex, as neovascular growth is not always beneficial, since it plays a role in tumor growth, and also the damage from " wet " macular degeneration, a disease for which smoking ( a major source of carbon monoxide in the blood, several times more than natural production ) increases the risk from 4 to 6 times.
It's difficult to find source of carbon monoxide in a sentence. 用source of carbon monoxide造句挺难的

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