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2016年初，来自密西根理工大学的研究人员观察到皇家岛上只剩两只狼。
In early 2016, researchers from Michigan Tech University observed just two remaining wolves on Isle Royale.
youdao
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2016年初，来自密西根理工大学的研究人员观察到皇家岛上只剩两只狼。
In early 2016, researchers from Michigan Tech University observed just two remaining wolves on Isle Royale.
youdao