Poeple in villages are healthier than people in towns. That is because the air in villages is very fresh. Farmers are working all day in the fields, breathing fresh clean air. But there are too many factories in cities. They produce more and more harmful gases. At last, cities are full of smoke. And there's many dust in cities,too. It may cause a disease. So fresh air is very important to the people in cities. We need fresh air. So please don't pollute the air!

　　在農村生活的人比在城鎮生活的人更健康。這是因為農村的空氣很新鮮。農民們在田野里工作，呼吸新鮮潔凈的空氣。但在城市有太多的工廠。他們產生更多的有害氣體。最后，城市充滿煙霧。而且城市中也有許多灰塵。這可能導致疾病。所以新鮮的空氣對在城市里的人來說很重要。我們需要新鮮空氣。所以請不要污染空氣！