论文部分内容阅读
在当代,陆地上的发展已经受到很大的制约。在未来的21世纪,人们寄希望于海洋——那一大片基本未被开发的最后疆土。
In the contemporary era, land development has been greatly hindered. In the 21st century, people are pinning their hopes on the ocean, the vast undeveloped and largely undeveloped territory.