Rumour has it they surge around in circles, twice or thrice, for maximum effect.

谣言称他们为达到最佳效果绕城环行了两三次之多。

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That effect was especially strong in the period after the surge in U.S. troop levels, from 2007 on.

这一效应在2007年美军人数增加的水平上会尤为明显。

youdao

Higher prices may cause a surge in headline inflation but their main effect will be to act as a tax on consumers.

高物价将引发通胀恐慌，主要效果则是将增加消费者的税负。

youdao

They mostly remain convinced that the problem is only temporary, that the economic reports are coming in worse than their forecasts only because they under-estimated the effect the surge in energy and commodity prices would have on consumer spending, and the effect the Japanese earthquake would have on auto and technology production.

FORBES: A New Idea For Bernanke: Leave The Economy Alone

Our commanders will soon be hard pressed to preserve today's deployments of American forces in Iraq, let alone to have them take up once again the sorts of positions in the urban areas that they held to such therapeutic effect during the surge.

CENTERFORSECURITYPOLICY: Who lost Iraq?

The effect: a significant surge in the use of independent contractors.

FORBES: Temporary Help Wanted: Managing Contractors