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- 问题详情：Researchersareplacingroboticdogs（机器*）inthehomesoflonelyoldpeopletodeterminewhethertheycanimprovethequalityoflifeforhumans.AlanBeck,anexpertinhuman-animalrelationship,andNancyEdwards,aprofessorofnursing,areleadingtheanimal-assistedstudyconcern...
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