How to regulate "non-point source" pollution, such as pesticides from agricultural run-off, is a continuing, and harder, debate.

象农业使用中飘散的杀虫剂这类“非点源”污染又如何控制？这更是个长久和难缠的辩论题。

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The most ambitious water quality provision of the 1987 Amendments relates to non-point source pollution, that is, run-off from agricultural and urban areas.

1987年的修正案中，最理想的水质规定涉及到特定污染源的污染，也就是说来自农业和都市区雨水的污染。

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Williams driver Mark Webber, speaking to team sponsor Allianz, thinks run-off zones made of tarmac are safer, but makes an important point: "Many drivers exploit that, and sometimes even overtake."

威廉姆斯车手马克·韦伯就对车队的赞助商安联表示过，柏油碎石面建成的缓冲区更加安全，但重要的是：“许多车手可以利用它，有时甚至可以实现超车。”

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Polls point to a run-off between Mr Menem and Ms Carrio.

ECONOMIST: Argentina's presidency

Defeat leaves the Latics only a point off the drop zone and their recent run of one win in nine matches has left Roberto Martinez's side nervously looking over their shoulder at the bottom three.

BBC: Manchester United 5-0 Wigan

At its Gogarburn headquarters, the lender has announced that it's just passed the half-way point of its sale and run-off of those assets it doesn't want or need.

BBC: Crash diet for the Royal Bank of Scotland