Ainley explained that even if he caught him, and brought him back to the colony, he would immediately head right back for the mountains.

爱恩利博士解释说，即使抓住它，带它回到栖息地，它也会立即掉头朝群山而去。

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Fear of predators doesn't just affect the penguins' daily activities, however. It also influences the birds' migration patterns, Ainley and Ballard report this week in Polar Biology.

Ainley和Ballard在本周的《极地生物学》中指出，害怕被捕食已经影响到企鹅的日常活动，甚至它们的迁徙规律。

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But when Ainley talks about these penguins, it sounds like he's talking about friends.

NPR: Penguins Helped and Hurt by Changing Climate

Our guide is David Ainley, one of the most respected penguin researchers in the world.

NPR: Penguins Helped and Hurt by Changing Climate

Ainley has a thick white mane and a white mustache which spreads across his rugged face.

NPR: Penguins Helped and Hurt by Changing Climate