Evidence of this ongoing force known as desertification comes from satellite photographs of once arable fields now abandoned. But not all of them moved away.

从卫星照片可以看出沙漠化，曾可耕种的田地，如今弃置荒废。但并非所有地方都改变。

It's incredibly apparent in these sets of satellite photographs taken by the European space agency over the southern entry point to the canal on the Red Sea.

从欧洲航天局在红海一侧的运河南部入口点拍摄的这组卫星照片中看，堵塞情况非常明显。

Despite these images and satellite photographs which show the base is real, it was only in 2013 that the U.S. government officially admitted that Area 51 exists.

尽管这些图像和卫星照片显示基地是真实的，但直到 2013 年美国政府才正式承认 51 区的存在。