中学语文《曼于使楚》一文中，有“橘逾淮北则为积，地气使然”一句。通晓全文后，曼子是使用“当淮南的橘村移到淮北后变成了积树，是由于地理环境的作用。”论证吴国的人到楚国成了强盗，是楚国的环境造成的。橘与快，在植物分类学中，都属美香科的果树。但橘为柑橘属植物， Middle school language “Man in the Chu” article, there is “orange over Huaibei is the plot, gas to make” a sentence. After reading the full text, Manzi used “when the Orange Village in Huainan moved to Huaibei, it became a jungle because of the geographical environment.” The demonstration that the people of Wu Kingdom went to Chu to become a robber was caused by the environment in Chu State . Tangerine and fast, in plant taxonomy, are the fruit trees of the genus Aconitum. But orange is a citrus,