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2013-05-23 12:21
求翻译：Since 1970, lead poisoning prevention efforts in the U.S. became source-directed rather than case-oriented. These efforts involved setting enforceable standards for environmental media and drinking water and placing specific restrictions on the use of lead. The establishment of new government institutions enabled these是什么意思？ 待解决
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Since 1970, lead poisoning prevention efforts in the U.S. became source-directed rather than case-oriented. These efforts involved setting enforceable standards for environmental media and drinking water and placing specific restrictions on the use of lead. The establishment of new government institutions enabled these
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2013-05-23 12:21:38
正在翻译，请等待...
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2013-05-23 12:23:18
自1970年以来，铅中毒预防努力在美国变得来源指挥而不是情形导向。这些努力介入规定环境媒介和饮用水的可执行的标准和限制具体使用主角。新的政府机关的创立使能这些预防努力
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2013-05-23 12:24:58
自1970年以来，铅中毒预防努力在美国。 变得来源指挥而不是情形安置了。 这些努力介入规定可执行的标准为环境媒介和饮用水和放置具体限制在对主角的用途。 The establishment of new government institutions enabled these prevention efforts
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2013-05-23 12:26:38
1970 年以来，在美国的铅中毒预防努力成为了源指示，而不是以案例为导向。这些努力参与设置环境介质和饮用水可强制执行标准和具体限制的铅的使用。建立新的政府机构启用这些预防努力
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2013-05-23 12:28:18
正在翻译，请等待...
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