1、Smoking is harmful to the smoker's heathy. Smoke may result in a dark teeth and may cause bronchitis and lung deases. When the smokes spead into the air, it will make the air dirty and not good to other people, specially for the kids and old peoples. Smoking in public will disturb others and is not polite as well. Of course, to the ordinary familly，smoking will cost a big money and is a heavy burden for the life.

2、译文：吸烟危害健康。吸烟可让人的牙齿变黑、引起支气管炎和肺病。当烟雾在空气中扩散时，它会污染空气并危害他人，尤其是孩子和老人。在公共场合吸烟会打扰他人而且也不礼貌。当然，对一个普通的家庭来说，吸烟将花费一大笔钱并造成沉重的生活负担。