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The humpbacks are nearing the end of their epic journeys.
座頭鯨接近它們史詩(shī)般旅程的終點(diǎn)。
After two months and thousands of miles,
歷時(shí)2個(gè)月，數(shù)千英里的跋涉，
they're entering the polar seas both in the north and the south.
它們進(jìn)入了兩極的極地海洋。
In the far north, winter is over at last and the ice is starting to melt.
在遙遠(yuǎn)的北方，寒冬終于過(guò)去，冰雪開始消融。
The Aleutian Island chain running west from Alaska is the gateway to the Bearing Sea.
阿拉斯加西部的阿留申群島是通向白令海的大門。
With the retreating ice, rough weather and ferocious currents stir up these shallow seas.
隨著冰雪的消退，暴烈的天氣和洶涌的洋流把這片淺海攪得天翻地覆。
Add sunshine and the mix is spectacularly productive.
再加上陽(yáng)光，這種組合的產(chǎn)生了大量的養(yǎng)分。
Five million shearwaters have flown almost ten thousand miles from Australia to get here.
500萬(wàn)只水雉鳥從澳大利亞飛行了近萬(wàn)英里來(lái)到這里。
In all eighty million seabirds come here for the summer,
總計(jì)約有8000萬(wàn)只海鳥到這里度夏，
the greatest concentration to be found anywhere on Earth.
到處都是世界上最偉大的聚集。
The humpbacks have finally arrived.
座頭鯨終于抵達(dá)。
