英语听力：2012-02-01 从南极到北极 From Pole To Pole—7
时间：2014-01-20 07:39:38
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（单词翻译）
As we travel south, so the sun’s influence grows stronger. And at 50 degrees of latitude1, a radical2 transformation3 begins. Summers here are long enough for broadleaf trees to replace conifers. Broadleaves are easier to eat and digest, so now animals can collect their share of the energy that has come from the sun. It’s summer. And these forests are bustling4 with life.
But the good times will not last. Broad leaves must be shed in winter for their damage by frost. As they disappear, so the land becomes barren with little for animals to eat.
The inhabitants must migrate,
hibernate5 or face months of near starvation.
The Amur
leopard6, the rarest cat in the world. Here, in the
deciduous7 forests of eastern Russia, the winter makes hunting very difficult. Pray animals are scarce. And there’s no
concealing8 vegetation. The
cub9 is a year old and still
dependant10 on its mother.
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