英语听力：自然百科 黄石公园的夏天 Yellowstone—12
时间：2014-08-27 07:49:26
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（单词翻译）
This female grew up on the lake, so she knows where to take the cubs1 for a very special trip.
Yellowstone cutthroat
trout2 are massing in the mouth of the stream that feeds the lake.
They are preparing for their annual
spawning3. But the trout must wait, the stream is still running
fast, too turbulent to lay their eggs. It's a nervous time for them, and for good reason.
This osprey has a brood to feed and will be back. Now the
otters4 are here, too. She chooses her
moment to lead the pups up stream, then leaves them to watch and give them a lesson in
hunting. A large trout like this, full of eggs, is a
trophy5 catch.
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