长鼻狗可能具有天生的防止因吸入香烟烟雾而患肺癌的能力,这一结论是人们通过对狗及其他人类同伴的流行病学分析得出的。以往的不少研究曾证明,被动吸烟者也具有患致死性肺癌的高风险。新近美国流行病学家探索了暴 Long-nosed dogs may have a natural ability to prevent lung cancer from inhaling cigarette smoke, a conclusion that has been drawn from the epidemiological analysis of dogs and other human companions. Many previous studies have shown that passive smokers also have a high risk of fatal lung cancer. A recent U.S. epidemiologist explored violence