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外科医生不久就可使用一种现代化的石器时代的工具来做一些精细的手术。美国科罗拉多大学的人类学家佩森·希茨正与一位眼科医生一起从事这种手术刀的试验,这种手术刀是模仿古玛雅人用黑曜岩(火山玻璃)手工精制的刀片制成的。希茨说:“折
Soon the surgeon can use a modern stone age tool to do some fine surgery. Payson Hitz, an anthropologist at the University of Colorado, is experimenting with an ophthalmologist using a scalpel that imitates the ancient Mayan man made from hand-refined obsidian (volcanic glass) of. Hitz said: "discount