In three separate field trials - the most recent in Sudan last year - Hassanali's team showed that even minute doses of PAN could stop hopper bands dead in their tracks and make them break ranks.

在分别进行的三个实地试验中—最近一次是去年在苏丹开展的—哈桑·纳尼的小组所展示的结果表明，即便是微量的PAN便可完全阻止蝗蝻带的行进，使其溃不成军。

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The last three are toxic in large doses, and black cohosh should be avoided if a woman has low blood pressure.

后三种大剂量使用时是有毒的，而且低血压妇女应该禁止使用总状升麻。

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Until turmoil rocked financial markets last summer, the funds racked up strong returns, boosted by heavy doses of leverage.

直到去年夏季金融市场动荡前，凭借巨大的杠杆作用，这些基金的回报还非常丰厚。

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And sure enough, the retelling of Christ's last days through the eyes of Mary Magdalene is interlaced with heavy doses of modern social activism in this stirring new oratorio, composed by John Adams to a libretto compiled by Peter Sellars from texts both ancient and contemporary.

WSJ: John Adams' staged 'Gospel' has NY premiere

In the end, Bayer and the U.S. government were able to come to terms about a lower price for many millions of doses of Cipro, but the case will not likely be the last, given growing worries about threats from other biological weapons, and the realization that public health is not just a national, but a worldwide problem.

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If you encounter a relatively mild season, such as last year when about 40 percent of the US population was vaccinated, millions of doses are eventually destroyed.

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