But what triggered the decline? Too much fast ice.

而造成企鹅数量减少的原因是过多的坚冰。

Too much fast ice results in a very long trip to the ocean for food.

坚冰过多导致企鹅需要长途跋涉才能到海中觅食。

The steeper the mountains, the faster ice flows, and the quicker it carves the underlying rock.

山越陡峭，冰移动的速度就越快，冰雕磨下面岩石的速度就越快。

Dr Louise Emmerson, Australian Antartic Division: " Between 2003 and 2008, there was a lot of very extensive fast ice, and it was during that period that there were virtually no chicks that survived."

露易丝·埃莫森博士（澳大利亚南极局）：“在2003年至2008年间，坚冰覆盖的区域面积非常大，也正是在那段时间内，几乎没有雏鸟幸存下来。”