【正确答案】 It is known to all that smoking is not only harmful to our health, but also harmful to the environment. Smoking can result in many diseases, such as lung cancer. Additionally, smoking can affect non-smokers. In regard to passive smokers, their chance of falling ill is greater than that of the smokers. Some young people believe that smoking is cool, and others think that smoking can refresh themselves. To this day, more and more public places have hung up "No Smoking" signs, which is a big progress we have achieved. We should make greater efforts to inhibit smoking in public places for the sake of our health.

【答案解析】本文主要介绍了吸烟的危害，属于说明文。因此，汉译英时应使用较为正式的词语，而且本文讲述的是一个常见现象，所以时态以一般现在时为主。
汉译英时，首先要看清题材，选择相应的时态；其次，准确理解原文要表达的意思；最后，注意英汉两种句子结构、语言表达的差异，选择标准的英语句子结构、地道的表达方式，为译文加分。