对我们来说,植物是一种最古老的能源,它伴随人类走过了几十万年。然而,现在人们用石化燃料代替了植物,不少国家的农民还把收割粮食后剩下的秸秆“烧荒”。这是很可惜的,因为这不但会浪费能源,还会增加二氧化碳的排放量,污染环境。现在,不少国家开始开发利用植物能源的新方式。 For us, plants are the oldest kind of energy, and it has been with humans for hundreds of thousands of years. However, people now use fossil fuels instead of plants, and farmers in many countries have also “burned away” the remaining straw after harvesting food. This is a pity because it will not only waste energy, but also increase the amount of carbon dioxide emissions and pollute the environment. Now many countries have begun to develop new ways of using plant energy.