广漠深邃的海洋,占地球面积近四分之三。它不仅是人类的资源宝库、交通要道和国防前哨,而且是人类生活的重要环境。人类为了有效地开发海洋的丰富资源,利用海洋的有利条件,防止海洋的自然灾害,以及准确地予报天气、气候等,都需要调查海洋、研究海洋、认识海洋。在阶级社会里,侵略与反侵略、霸 The vast deep ocean, accounting for nearly three-fourths of the earth’s surface. It is not only a treasure trove of human resources, a traffic thoroughfare and a national defense outpost, but also an important environment for human life. In order to effectively exploit the rich resources of the oceans, make use of the favorable conditions of the oceans, prevent the natural disasters of the oceans, and accurately report the weather and climatic conditions, human beings need to investigate the oceans, study the oceans and know the oceans. In class society, aggression and anti-aggression and tyrants