铅中毒

shàng shì jì bā shí nián dài diàn xiàn hé qiān zhòng dú jī hū shǐ tā men bīn lín miè jué

上世纪八十年代，电线和铅中毒几乎使它们濒临灭绝。

In the 1980s, electrical lines and lead poisoning nearly drove them to dying out．