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Some communities have even discussed the possibility of bringing wolves back into the ecological mix.
出自-2013年12月听力原文
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That means wolves in the suburbs of New York
出自-2013年12月听力原文
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The wolves would kill deer of course.
出自-2013年12月听力原文
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What would happen if wolves were brought back into the ecological mix
出自-2013年12月听力原文
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They have fallen prey to wolves.
出自-2013年12月听力原文