图片是过去十年间由美国间谍卫星拍摄的，它们证实了，在最近几年，大面积高纬度区域在夏天失去了冰层的覆盖。

The photographs, taken by spy satellites over the past decade, confirm that in recent years vast areas in high latitudes have lost their ice cover in summer months.

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这里显示的勒拿河三角洲，是美国地球资源卫星7号2000年拍摄的假彩色图片，覆盖了拉普捷夫海（Laptev Sea）上超过一万一千平方英里的区域。

The Lena’s delta, shown here in a false-color image taken by the Landsat 7 satellite in 2000, covers more than 11,000 square miles on the Laptev Sea.

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新网络将保持66颗跨链低轨卫星的星座体系，覆盖全球所有区域。

The new network will maintain the Iridium constellation architecture of 66 cross-linked LEO satellites covering 100 percent of the globe.

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