PCBs (Polychlorinated Biphenyls), once widely used for industrial purposes but outlawed as carcinogenic in 1976, can also be found in fish due to environmental contamination.
PCBs(多氯联苯)，一度广泛用于工业用途，但在1976年作为致癌物被取缔。
PCBs (Polychlorinated Biphenyls), once widely used for industrial purposes but outlawed as carcinogenic in 1976, can also be found in fish due to environmental contamination.
PCBs(多氯联苯)，一度广泛用于工业用途，但在1976年作为致癌物被取缔。
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