5. Apart from the scientific statistics, it might be helpful to look at what smoking tobacco actually does to the human body. Smoke is a mixture of gases, vaporized chemicals, minute particles of ash, and other solids. There is also nicotine, which is a powerful poison, and black tar. As the smoke is breathed in, all these components form deposits on the membranes of the lungs. One point of concentration is where the air tube, or bronchus, divides. Most lung cancer begins at this point.
5、除了科学统计之外,研究工作还有助于认清吸食烟草对人体的实际影响。抽烟产生的烟雾是一种混合的气体,包括气化的化学物质,极小的灰末微粒和其它固体,还有毒性很强的尼古丁和黑焦油。当吸进烟时,所有这些成分就都沉淀在肺膜上。在气管和支气管分支的地方有一个集中点。大部分肺癌就从这里发端。
6. Smoking also affects the heart and blood vessels. It is known to be related to Beurgers disease, a narrowing of the small veins in the hands and feet that can cause great pain and lead even to amputation of limbs. Smokers also die much more often from heart disease.
6、抽烟也影响心脏和血管。现已查明抽烟与伯尔格氏病有关。这种疾病使手脚的细静脉不断缩小,从而引起剧烈疼痛甚至会导致截肢。抽烟者死于心脏病的也比不吸烟的人多得多。
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