Smoking and Health-吸烟与健康

人人都知道吸烟有害健康。那些吸烟过度的人一般都活不长。吸烟可能引起多种疾病，其中最严重的是肺癌。另外，吸烟的人还损害了那些不吸烟的人的健康。如果所有的烟民都戒了烟，那么我们就可以享受更清新的空气，也就更健康了。

Everybody knows smoking is bad for health. Those who smoke too much may not live long. Smoking may cause many diseases. The most serious one is lung cancer. Smoking can also do harm to those who don't smoke, If all smokers give up smoking, we can enjoy clearer air.