Not until after the first third of the twentieth century, when the human population of the continents had surpassed 2000 million, did many people give much thought to the depths of the sea. It is almost as though they...Not until after the first third of the twentieth century, when the human population of the continents had surpassed 2000 million, did many people give much thought to the depths of the sea. It is almost as though they were pushed from land展开更多
文摘Not until after the first third of the twentieth century, when the human population of the continents had surpassed 2000 million, did many people give much thought to the depths of the sea. It is almost as though they were pushed from land
