如果你不这样做的话，这个图像将废掉，因为它缺乏细节，最暗的区域和最亮的区域。
If you don't, you'll end up with a washed out image, lacking the detail in the darkest and brightest areas.
但即使是美国最亮的城市拉斯维加斯，其发出的亮度也仅只及太阳光在这块区域反射亮度的万分之一。
But even the brightest city in America, Las Vegas, emits only about a ten-thousandth as much light as the sun shines upon the same area.
一只船的痕迹，大致从西向东穿过图片中上部，可以追随到船只正朝着东北偏东方向行驶。东南部地区最亮的光滑区域，显示成群的船只出现在共同区域。
One boat wake, running roughly west-to-east through the upper middle part of this image, can be traced to the ship that has made it, which is heading toward the east-north-east.
一只船的痕迹，大致从西向东穿过图片中上部，可以追随到船只正朝着东北偏东方向行驶。东南部地区最亮的光滑区域，显示成群的船只出现在共同区域。
One boat wake, running roughly west-to-east through the upper middle part of this image, can be traced to the ship that has made it, which is heading toward the east-north-east.
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