What does the word "plastic" mean? “Plastic”这个词是什么意思？

　　It means "changeable" in Latin. 它在拉丁文中的意思是“可变的”。

　　Are there many kinds of plastics? Yes, there are. 塑料制品的种类多吗？是的，种类繁多。

　　Plastics differ in color, shape, thickness and so on. 塑料制品在颜色、形状、厚度等方面上存在不同。

　　There are many kinds of plastics, like grocery bags, kid's toys, drink bottles and clocks. 塑料制品有很多种，比如购物袋、儿童玩具、水瓶和钟表。

　　But most of them have the same weakness. Heat! 而它们中的大多数都有相同的缺点——怕加热！

　　Can you guess what happens if you leave a plastic bag on a stove? 你能猜到在火炉上放一个塑料袋的结果吗？

　　It will melt in a few seconds with a bad smell. 它很快就会熔化，同时还散发出难闻的味道。

　　However, plastic is cheap and very useful for people's lives. 然而，塑料制品很廉价并且非常有益于人们的生活。