They identified four different lead-based substances, two of which were man-made, not natural.

他们鉴定出四种不同的含铅物质，其中两种是人工合成的，并非天然物质。

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Because it and its compounds are poisons (see lead poisoning), lead-based paints and gasoline additives have been phased out in many countries.

由于铅和铅化物具有毒性，因此含铅的颜料和汽油添加物现已被禁用。

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A new study shows that lead-based paint remains a worldwide threat to public health. Paint containing lead is a major cause of lead poisoning in children.

一项新的研究发现，含铅的油漆仍旧世界范围内危害着公众健康。含有铅的油漆是导致儿童铅中毒的主要原因。

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A new study shows that lead-based paint remains a worldwide threat to public health.

VOA: special.2009.08.31

He and his team are calling for a worldwide ban on lead-based paint.

VOA: special.2009.08.31

secretary-general to lead, coordinate and advocate efforts to end gender-based violence in armed conflict.

VOA: standard.2009.09.25

Some of the older pigments are lead-based and difficult to acquire because of EU health-and-safety regulations.

WSJ: Forging Ahead With a Goya Classic

Three of four lead-based figures were taken from a park where they had stood since 1926.

BBC: Metal theft: Britain's most annoying crime wave

Moreover, if history provides any indication, choking on toys is a far greater hazard for children than lead-based toys.

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