工厂对工人验血，辞掉那些血铅含量超标的人。
The factory conducted blood tests and dismissed those whose lead levels were elevated.
方法采用非火焰原子吸收法测定全血铅含量。
Methods Non flame atom absorptance was used to determine the blood lead levels.
相比之下，美国只有不足1%的儿童，其血铅含量超过WHO限制值。
By comparison, fewer than 1% of children in the U.S. have levels above the WHO limit.
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