A couple of decades ago, I had a good reason to ponder the health hazards of cooking meals in poor countries. Back then I lived as an anthropologist in the mountains just north of Afghanistan, a place where it was common practice for villagers to cook bread on the walls of wood-fuelled clay ovens.
几十年前，我曾有充分的理由思考在贫穷国家烹饪食物所带来的健康风险。当时，我是人类学家，住在阿富汗略往北的山区里，在那里，村民们经常用木柴生火，在土炉膛壁上烤制面包。
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