Smoking is harrnful to health.Medical science has now proved that smoking cancause lung cancer and other diseases such as emphysema.Your chances of having a heartattack also increase the more you smoke.Smoking is dafinitely a health hazard.
吸煙對健康有害。醫(yī)學已經(jīng)證明吸煙能引起肺癌和其它疾病, 如肺氣腫。吸煙越多, 得心臟病的機會也會增加。無疑吸煙對健康有害。
