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如果你来到美国匹兹堡的梅姬妇科医院,会看到自己行走的“手推车” 它时而从中央药库出来,将药品送到护士室;时而到餐厅去,
If you come to Mei Ji Gynecology Hospital in Pittsburgh, USA, you will see your “trolley” walking out of the Central Pharmacy and sending the medicine to the nurse’s room. When you go to the restaurant,