oceans相关论文
A radio report caught my attention the other day， as it spoke straight to my heart： Cadets1 at the US Naval Academy in Ann......
You and me， from one world， we are family. One day， we will meet， because it’s a small world after all（毕竟）. It’s a worl......
习作一 It is known that the sea is of great significance to our life. Because the sea provides us a lot of resources， ......
当前国际海底区域资源勘查从单一的多金属结核,向富钴结壳、多金属软泥、热液硫化物、天然气水合物和深海生物基因多种资源发展,新......
