I think there's a sense that many of us have that the great age of exploration on Earth is over, that for the next generation they're going to have to go to outer space or the deepest oceans in order to find something significant to explore.
思うに、私たちの多くは 地球探検の黄金時代は終わり、 次の世代は 宇宙か深海に行かなければ 探検に値する発見はないと認識しています。