砷和铅也是天然形成的金属元素，在工业上从制造杀虫剂到应用于电子工业，它们有着多种用途。
Arsenic and lead are also naturally occurring metallic elements that have varieties of USES in industry from insecticides to electronics.
虽然大部分城市遵守了自来水标准，但在美国的19个城市的部分自来水检测中仍然被发现含有砷、铅和杀虫剂。
While most cities meet the standards for tap water, some tap water in the 19 U. s. cities tested was found to contain arsenic, lead, and pesticides.
五氧化二砷（AS2O5）是杀虫剂、除草剂以及金属黏合剂的主要成分。
Arsenic pentoxide (As2O5) is also used in insecticides, herbicides, metal adhesives, and pigments.
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