In certain instances, cases of acute poisoning may still be seen in children who are chronically exposed and whose blood lead levels reach levels that interfere with normal functions.

在某些情况下，在慢性接触的儿童中仍可见到急性中毒病例，其血液中含铅量达到可干扰其正常功能的程度。

youdao

Chelation therapy in children who continue to be exposed to lead is ineffective and may exacerbate toxicity.

螯合疗法对于持续暴露在铅环境的儿童不产生治疗效果，而可能加重中毒现象。

youdao

Lead author Maryse Bouchard explains, "We found significant deficits in the intelligence quotient (IQ) of children exposed to higher concentration of manganese in drinking water."

主要作者玛丽解释道，“我们发现饮用自来水中含有高浓度锰的孩子的智力明显不足。”

youdao

One of those scientists. Kim Cecil,from the University of Cincinnati She was part of a team of researchers who took annual blood samples from several hundred lead-exposed children for more than 20 years.

VOA: standard.2009.12.19

Met-Mex insists that none of the children in its database of previously exposed patients exhibits long-term effects associated with lead poisoning.

ECONOMIST: Lead pollution has caused a lasting public-health blight