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尽管空谈家们要求我们吃的每样东西,抽的烟,呼吸的空气不致引起癌症,但成千种可疑的致癌物仍在不断增多。食品颜料,阻火剂,农药也都是可疑的致癌物。并且,已有三十多种化合物被绝大多数研究者一致认为能引起人类癌症,通常工业接触致癌的悲剧,就是明显的证据。一位伦敦医生于一七七五年提供了化学环境和癌症联系的一个著名的先例。他发现:扫烟囱的青年人阴囊皮癌发病率很高。因而
Despite the empty talk of everything we ask our family to eat, smoking cigarettes and breathing air will not cause cancer, thousands of suspected carcinogens are still increasing. Food pigments, fire retardants, and pesticides are also suspected carcinogens. And, more than thirty compounds have been unanimously considered by most researchers as capable of causing human cancer, and the tragedy of industrial exposure to carcinogenicity is evident evidence. A London doctor provided a famous precedent for the chemical environment and cancer links in 1775. He found that the incidence of scrotal skin cancer is high among young people who have smokestacks. thus