The play on gravity is mind-boggling – while foam and cardboard appear as weightless as their original counterparts, the concrete bags at center stage look every bit as heavy as their 60 lb originals.

重力设置是令人难以置信的——而泡沫和纸板似乎是失重的，中心舞台的混凝土袋看起来重如它们原有的60磅一样。

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Things must not have been going as planned, because here I was center stage at Burger King in front of an annoyed group eager for a quick affirmative.

事情一定没有按计划的进行，因为在这里我处于汉堡王的舞台中心，面对一群急切等待着肯定回答的不悦的人们。

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Striding back and forth across the stage at the Yerba Buena Center, Jobs spoke passionately about the iPad 2's features as No. 2 and heir apparent Tim Cook looked on.

在芳草地艺术中心的舞台上，乔布斯跨步来回走动，激情四射的介绍iPad 2的特性，而做为苹果二号人物及绝对继任者的蒂姆·库克则在旁观看。

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Orszag is accustomed to working behind-the-scenes analyzing economic data, but now finds himself at center stage.

CNN: Orszag emerges from behind the scenes as budget is unveiled

But what is unusual is the man at center stage in today's meeting.

CNN: King: U.S. wants to speed transition in Iraq

At center stage at the conference is Elan , which will present detailed data late Tuesday from a second-stage trial of its amyloid-busting drug, bapineuzumab.

FORBES: Alzheimer's Drug Showdown