伦敦经济学院的维克拉姆•帕塔尼亚说，同非洲和拉丁美洲相比这是一个相当大的差距。
This is a much bigger gap than in Africa and Latin America, says Vikram Pathania of the London School of Economics.
新的显示的是发生在航天飞机1998年期间在波音公司改装的帕姆代尔，加利福尼亚州，穿梭工厂发生的许多升级项目之一。
The new display was one of many upgrades that took place at Boeing's Palmdale, Calif., shuttle factory during the orbiter's 1998 modification period.
资深科学家詹姆斯·威廉姆斯说：“这样的情况就相当于在月球沿着其轨道运行的时候对它施加能量，使其摆脱对地球的公转。”他就职于加利福尼亚州帕萨迪纳市的美国国家航空航天局喷气推进实验室。
"You're putting energy into the moon's orbit and taking it out of the Earth's spin," says James Williams, a senior research scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif.
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