名词
中文翻译：多氯联苯
同义词：
['polychlorinated biphenyls (PCBs)', 'chlorodiphenol', 'dioxin']
例句：
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1. Polychlorinated biphenyls are highly toxic and have been banned in many countries.
多氯联苯具有极高的毒性，已在许多国家被禁止使用。
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2.The workers were exposed to high levels of polychlorinated biphenyls during the cleanup process.
在清理过程中，工人们暴露在高水平的多氯联苯中。
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3. The contaminated soil was treated with a mixture of chemicals that removed polychlorinated biphenyls from the environment.
受污染的土壤被一种化学物质混合物处理，以从环境中去除多氯联苯。