surge是什么意思？

The surge in world grain prices in 2007 and 2008—and the threat they pose to food security—has a different, more troubling quality than the increases of the past.

In contrast, the recent surge in world grain prices is trend-driven, making it unlikely to reverse without a reversal in the trends themselves.

With surging obesity levels putting increasing strain on public health systems, governments around the world have begun to toy with the idea of taxing sugar as well.

Unemployment has surged in every major occupational category.

BrightLine iTV, which designs and sells interactive ads, says interest has surged: it expects its revenues almost to triple this year.

Among large traditional retailers, Walmart recently reported the best results, leading its stock price to surge, while Macy's, Target; and Nordstrom's dropped.

Looking only at that 15.2 percent surge would be misleading.

Weather conditions that drive this bizarre temperature surge have visited the Arctic before.