Peter Kessler works with the U.N.Refugee Agency.

VOA: special.2009.05.08

And an electron is something where, i n fact, we might be able to, if we calculate it and see how that works out, actually observe some of its wave-like properties.

如果我们对电子做计算,并且知道如何算出来的,那么我们是可以观测到,电子的一些波动性质的。

麻省理工公开课 - 化学原理课程节选

The U.N. works, Mr. Hill says, when states take charge.

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Ralph Maratta, who works at the Warren, N.

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Lyrically, this is a simple ditty keyed to 17 title repetitions, but its emotional complexity is how rock 'n' roll songwriting works.

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