今天爷爷开着车带我和姐姐出去玩。在半路上我发现了一个大烟囱，从里面冒出了阵阵白烟。我问姐姐：“那些烟囱是在制造云彩吗？”姐姐扑哧一声笑出了声来说：“那些白烟是污染空气的白烟，不是云彩。”我惊奇的看着姐姐，一句话也说不出来。
Today, grandpa took me and my sister out in a car. On the way, I found a big chimney, from which came out bursts of white smoke. I asked my sister, "are those chimneys making clouds?" My sister chuckled and said, "those white smoke are the white smoke that pollutes the air, not the clouds." I looked at my sister in surprise and couldn't say a word.
世界上污染空气的事情可真多呀！我们要少吃烧烤，少造工厂，少排放废水，少砍树木，我们和大自然交个朋友吧！让我们保护大自然，让大自然变得更加美丽！
How many things pollute the air in the world! We should eat less barbecue, build less factories, discharge less waste water and cut less trees. Let's make friends with nature! Let's protect nature and make it more beautiful!
