translation.en: We've been familiar for 40 years with this image: the fragile beauty of land, ocean and clouds, contrasted with the sterile moonscape on which the astronauts left their footprints.
translation.zh: 四十年来我们已熟悉了这幅图片： 柔美的陆地，海洋和云层 与贫瘠的月面形成对比， 而宇航员已在月面留下了足迹。