我国有四大海域:渤海、黄海、东海、南海,它们是我国神圣不可侵犯的领土。这些海洋中存诸有大量的自然资源,它们是我国天然的宝库。这些海洋也承载着我国的历史文化,曾经有无数历史事件发生在我国的海洋上。海洋记录着我国千万年的沧海桑田的变化。海洋也预示着我国的环境变化,当海水也遭到污染时,便意味着人们生存的环境更加恶劣。然而,由于种种原因,我国的高中地理课本一直没有详细介绍海洋方面的知识,部分高中学生一提到我国的领土 My country has four major seas: the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea, which are the sacred and inviolable territories of our country. There is a great deal of natural resources in these oceans, which are the natural treasures of our country. These oceans also carry the history and culture of our country. There have been numerous historical events that took place in our oceans. The oceans record the changes of millions of years in our country. The oceans also indicate the environmental changes in our country. When the sea water is also polluted, it means that people’s living environment is worse. However, due to various reasons, the high school geography textbooks in our country have not provided any detailed information about the ocean. Some high school students once mentioned the territory of our country