众所周知,海洋面积约占地球表面积的71.8%,陆地面积约占地球表面积的29.2%。人类为了改善自身的生存条件,一直在与大自然作着不懈(xiè)的斗争,其中最为成功的当数围海造田工程。荷兰人民为了生存,曾与大海的入侵进行了不屈不挠的斗争;由于人 As we all know, the marine area accounts for about 71.8% of the Earth’s surface area, the land area accounts for about 29.2% of the Earth’s surface area. In order to improve their own living conditions, human beings have been struggling with nature in their relentless struggle. Among them, the most successful one is the reclamation project. In order to survive, the Dutch people had an indomitable struggle against the invasion of the sea;