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Over the coming months, the few parts of Antarctic that are ice-free will be the stage on which 5 million Adélies will build their nests.
在未來的幾個(gè)月，一些南極的無冰地區(qū)，將有5萬阿黛利企鵝筑巢。

To construct one, they need pebbles. And without a good-looking nest, a male would be unable to attract a female when they at last arrive. An impressive property demonstrates your worth as a mate.
建巢需要鵝卵石，要是沒有好看的巢穴，雄企鵝最終就不能吸引異性。是否擁有令人印象深刻的足夠多的財(cái)富是選擇伴侶的條件。

It takes stones of all shapes and sizes to build a decent nest and finding ones that are just right is not easy. So some penguins turn to a life of crime.
建立一個(gè)像樣的巢需要很多各種形狀和大小的石頭，而要找到恰到好處的石頭并不那么容易。所以一些企鵝就出現(xiàn)了腹黑的行為。

The one who has been robbed seems unaware that the thief is just over his shoulder and looking for more.
這只企鵝一直勤勤懇懇地?fù)焓^，并沒意識到，小偷就在他背后，盯上了他更多的石頭。

The thief's nest is coming along nicely, probably because he keeps a particularly sharp lookout for robbers. After all, it takes one to know one.
這只腹黑小偷企鵝的巢建的不錯(cuò)，大概因?yàn)樗麑赡軙?huì)偷石頭的竊賊保持了高度的戒備，畢竟，它自己也好不到哪里去。