Brown said G20 leaders should aim to save or create 20m jobs and must act together to increase the potential impact of their actions.

英国首相布朗表示，20国首脑应致力于保存或创造二千万个就业岗位，而且必须通力协作，使得救援行动的潜力能发挥到更大。

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Now, Spiegelman and colleagues have identified two proteins that act as molecular "switches" to turn on the production of brown fat.

现在，Spiegelman和他的同事们已经确定了两种起分子“开关”作用的蛋白质，它们是产生灰色脂肪的关键。

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Brown knew he must act soon or his young men would begin leaving.

VOA: special.2009.06.18

Brown saw the gold as a sign that God wanted him to act.

VOA: special.2009.06.18

British Prime Minister Gordon Brown is calling the rescue operation an act of "breathtaking heroism."

VOA: standard.2009.09.09

Another restriction, however, may require Congress to act, Brown concedes.

FORBES: Work (Part Time) Until You Drop

"With one child dying every five seconds from hunger-related causes, the time to act is now, " Brown stressed.

CNN: U.N. expert: Food crisis 'a silent tsunami'

Det Con James Chapman, from Surrey Police, said Brown committed a "cruel and violent act on an innocent child".

BBC: Darran Brown jailed for baby boy GBH in Leatherhead