渔事焦点:为了拯救蛙鱼和虹鳟所做的努力,一座开放海域养鱼场引起的

Fish Focus:An eflfort to save salmon and steelhead,and controversy concerning an open-ocean

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摘要 [Federal officials have approved a program]to kill up to 840 sea lions in a portion of the Columbia River and its tributaries over the next five years to boost the survival of salmon and steelhead at risk of extinction.

作者 Lynda V.Mapes

机构地区不详

出处《空中英语教室（高级版．彭蒙惠英语）》 2021年第3期34-36,47,48,共5页 Studio Classroom

关键词虹鳟 BOOST 蛙鱼

分类号 S91 [农业科学—水产科学]

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空中英语教室（高级版．彭蒙惠英语）

2021年第3期

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渔事焦点:为了拯救蛙鱼和虹鳟所做的努力,一座开放海域养鱼场引起的

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