求翻译：全球暖化讓北極表面空氣溫度五十年內上升四度，海冰年年減少百分之九，狩獵時間變短，進食時間也跟著變短，北極熊變瘦了，體脂肪變少勉強生存下來，但是卻不夠牠們繁衍下一代。西哈德遜灣的北極熊，二十年內少了百分之十六。是什么意思？

Global warming in the Arctic surface air temperature rises so that four degrees fifty years, the mid- nine percent reduction in sea ice , hunting shorter time , eating time also followed shorter, thinner polar bear , the body becomes less fat barely survive

The world warms makes North Pole surface air temperature in 50 years rise four degrees, the sea ice reduces 9% year after year, the hunting time shortens, the feed time also shortens, the polar bear changed thin, the body fat tailed off to survive reluctantly, but actually insufficiently they multip

The whole world warm lets in the North Pole surface air temperature for 50 years rise four degrees, the sea ice reduces year after year 9%, the hunting time shortens, the feed time with shortening, the polar bear was also changing has been thin, the body fat changed few survives reluctantly gets dow

Global warming made the Arctic surface air temperatures rise four degrees within 50 years, sea ice reduction annually 9%, hunts are shorter, feeding time can change with short, the polar bear became thin, barely survive less body fat, but it is not enough they are breeding the next generation. Weste

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