李时珍的祖父是一位乡村医生，背着一袋药草穿梭在乡村救治病人。
Li Shizhen's grandfather was a country doctor who traveled in the countryside with a bag of herbs (药草) and medicine and cured (治愈) people.
可以选择性阅读的文件可以放到书架上的文件袋，靠近你椅子的纸篓，你乘坐飞机常用的文件包或者医生的办公室。
A tray on a shelf, in a basket near a chair where you're likely to read, or in a briefcase to read on a plane or in a doctor's office are good locations for papers that are optional reading.
萨姆把那只腿装进塑料袋，带着它和约翰去看同一个外科医生。
Sam put the leg in a plastic bag and took it and John back to the same surgeon.
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