地块及河流边缘的青色条带显示可能的小块冰雪分布。

Cyan strips along the edges of fields and rivers may be patches of snow and ice.

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但是在边缘地带，其数量有所减少，主要归咎于其生活环境的改变、水坝建设、河流改道、湿地干涸以及环境污染。

On the periphery of its range, populations have declined, primarily due to habitat modification, dam construction, river flow modification, wetland drainage, and pollution.

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云层围绕着图像边缘，而在中部，大西洋深蓝色的海水映出了这股波纹状，有点像棕黄色河流的火山灰。

Clouds bracket the edges of the scene, but the dark blue waters of the Atlantic Ocean show in the middle, and above them, a rippling, brownish-yellow river of ash.

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