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{"createTime":1619938988492,"content":"观察：这种“海豹锻炼器”是1962年由伦敦动物园的一名技术人员发明的，目的是鼓励动物园里的“懒惰”海豹为自己的鱼类发明更加努力地工作\n\n原文: WATCH: This 'seal exerciser' was invented in 1962 by a London Zoo technician to encourage zoo's 'lazy' seals to work harder for their fish #Inventions\n\n发布时间: 2021-05-02 14:50:00","contentType":"text/plain","quoteTx":"","attachments":[],"mention":[]}
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