英语翻译Lead1 The multitude of sources and exposures to lead mak

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英语翻译
Lead
1 The multitude of sources and exposures to lead make it more than an air contaminant.
2 Primary exposure occurs from direct inhalation,and secondary exposure comes from various routes to produce an ingestion of lead.
3 Furthermore,lead affects human health at the subcellular,cellular,and organ system levels.
4 Some specific effects of higher blood levels of lead include anevmia,cognitive deficits,peripheral neuropathies,and encephalopathy symptoms.

铅1.大量的铅污染源的暴露使得它（对人类的危害）超过了大气污染2.主要的污染来自于铅的直接吸入,其次来自于各种途径的铅摄入3.此外,铅金属通过影响人的亚细胞系统、细胞系统还有细胞系统的水平来影响人们的健康.4....

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