Since the first cases emerged in 2009 more than 3 000 children have been found to have unsafe levels of lead in their blood forcing the closure of dozens of smelts and factories.

自2009年发现首例案例之后，超过3000名儿童被检查出血液铅含量超标，迫使数十家冶炼厂和工厂关闭。

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Since the first cases emerged in 2009 more than 3 000 children have been found to have unsafe levels of lead in their blood forcing the closure of dozens of smelts and factories.

自2009年发现首例案例之后，超过3000名儿童被检查出血液铅含量超标，迫使数十家冶炼厂和工厂关闭。

youdao