日本大阪Ｍａｔｓｕｓｈｉｔａ公司办公大楼有一位非常胜任工作的“值勤警察”。他总是彬彬有礼，乐于助人。他能不厌其烦地用日语或英语为来访者指引道路、提供情况、解答问题，而且从来不知道疲倦。其实这位“警察”并非常人，它是一个机器人。每当有人走进大厅时，一个... Japan Matsushita office building in Osaka has a very competent work “duty police.” He is always courteous and helpful. He can take the trouble to point the way for visitors in Japanese or English, provide information, answer questions, and never feel tired. In fact, the “policeman” is not a very ordinary person. It is a robot. Whenever someone enters the hall, one ...