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As the Antarctic summer draws to an end,
南極的夏天接近尾聲
visitors that rely on the brief
海冰重新出現(xiàn)
flush of food will soon
為這片海短暫的豐腴
be forced north by the return of the sea ice.
而來(lái)的拜訪者 將被迫向北撤離
For the largest land predator,
對(duì)最大的陸地捕食者來(lái)說(shuō)
the sea ice cannot return soon enough.
海冰的迅速出現(xiàn)并非好事
The end of the Arctic summer
北極的盛夏接近尾聲
and the sun hasn't set for three months.
三個(gè)月以來(lái) 太陽(yáng)未曾落下
It's hard to imagine the bitter cold will soon return.
難以想象的是 嚴(yán)寒將很快再次襲來(lái)
Some will welcome the chills of autumn,
某些動(dòng)物會(huì)泰然接受秋季的蕭索
but for most,
而對(duì)于大多數(shù)而言
time is running out before
被迫向南遷徙的日子
they will have to retreat to the south.
正在一步步逼近
The shorter days and colder nights trigger
越來(lái)越短的白晝和越來(lái)越冷的黑夜
a dramatic change in the willows and blueberry bushes.
讓柳葉和藍(lán)莓叢發(fā)生了奇妙的變化
They stop producing the green pigment
它們停止分泌
that harnesses the sun's energy,
吸收太陽(yáng)能量的綠色素
and red and yellow pigments build up in their leaves.
紅色素和黃色素染上了葉子
