北极熊越来越常见—这些熊明显是从它们远在北方的栖息地为寻找食物冒险来到南方的。

Polar bear sightings are becoming increasingly common - with the bears apparently venturing south from their far-northern habitat in search of food.

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北极熊的生活越来越困难。

Life is becoming increasingly difficult for polar bears.

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但由于全球变暖，浮冰融化，在海上猎食也越来越困难，北极熊的捕猎场所也不得不转移到陆地上。

But the melting of sea ice as a result of rising global temperatures has made it more difficult for polar bears to hunt seals at sea, confining the bears to land.

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