肺癌

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　　长期熬夜打麻将，不自觉吸入牌友们的二手烟，今年40岁的张先生被诊断出患上了肺癌。专家警示，被动吸烟的危害甚至比直接吸烟更大。
　　据了解，张先生喜欢打麻将，经常打到凌晨。虽然他从不吸烟，但牌友们在房间内吞云吐雾，使得屋内的空气污浊不堪。今年年初，他出现咳嗽症状，治疗了一个多月都未见好转，最后到武汉市中心医院检查，发现不仅患有支气管炎，还得了肺癌。该院呼吸内科副主任医师王新荣分析，经常熬夜使身体免疫能力下降，再加上长期被动吸入二手烟，致使他患上肺癌。
　　专家说，吸烟时卷烟经燃烧散发的一部分烟雾并没有吸入肺部，而是直接散发在空气中。这一部分烟雾里含有10多种危害人体的化学物质，由于这些化学物质没有充分燃烧，甚至比吸烟者吸入的烟雾危害还要大。周围的人被动吸烟时间越长，吸入量越大，危险性也就越高。
　　专家指出，年吸烟400支（即两条烟）以上，患肺癌的概率就会大增，这一人群应每年做一次CT专项检查。
　　年吸烟量400支以上，致癌物质就会在肺部循环逗留。人一旦过度疲劳以及营养不良或机体免疫力下降，在外界作用下就有可能引发肺癌。
　　据介绍，我国遭受被动吸烟危害的人数高达5.4亿，每年死于被动吸烟的人数超过10万人。被动吸烟不仅会引发支气管炎、哮喘等呼吸道系统的疾病，也是许多肿瘤的直接诱因。

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==== 汉译英 ====

A healthy body is that each of us a better life, work and learning, and is the most important prerequisite for doing anything. Health needs are optimistic and cheerful attitude towards life, while health is good from our everyday habits. Life at home Xiaobian for you a selection of some health health knowledge, health tips to help you better and more scientifically conditioning your body, healthy and happy to spend every day!
The long-term stay up all night playing mahjong, card or unconsciously faithful second-hand smoke inhalation, Mr. Chang, a 40-year-old was diagnosed with lung cancer. Experts warned that exposure to tobacco smoke and even greater than direct smoking.
It is understood that Mr Cheung was like playing mahjong, often hit the early morning. Although he never smoked, but the brand faithful in a room, smoke, making the air dirty bear inside. Earlier this year, he appeared cough symptoms, treatment, more than a month have not been improved, and finally to the hospital in Wuhan city, it was discovered not only suffering from bronchitis and had to lung cancer. Department of Respiratory Medicine hospital physician, Wang Xin-Rong, deputy director of analysis, often stays up late to decrease the body's immune ability, coupled with the long-term passive exposure to tobacco smoke caused him to develop lung cancer.
Experts say cigarette smoking as part of the smoke emitted by the burning did not breathe into the lungs, but directly distributed in the air. This part of the smoke inside the human body contains more than 10 kinds of harmful chemical substances, because these chemicals not fully burning, even more than the smoke inhaled by smokers against even more significant. People around the longer passive smoking, inhaling larger the higher the risk.
Experts point out that the Smoking 400 (ie, two cigarettes) over the probability of lung cancer will be greatly increased, this group should be done once a year special inspection of CT.
For more than 400 years of smoking, carcinogenic substances will stay in circulation in the lungs. Once the fatigue as well as the human body's immunity, malnutrition or decreased under the action of the outside world is likely to cause lung cancer.
According to reports, subjected to passive smoking in China as high as 540 million against the number of people each year die from passive smoking more than 10 million people. Passive smoking will not only lead to bronchitis, asthma and other respiratory system diseases, but also a number of cancer risk factors.