经过十一年的建造，轨道实验室已完成了百分之九十八。

They left the orbiting laboratory about 98 percent complete after 11 years of construction.

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尽管如此，终有一刻使命会结束，轨道实验室将被引导回归地球。

Still, at some point the mission will end, and the orbiting laboratory will be directed to plunge toward Earth.

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当然NASA更愿意在轨道实验室保留一些人员，苏弗雷迪尼补充说。

NASA would of course prefer to keep some crew aboard the orbiting lab, Suffredini added.

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If you see a problem that asks you, for example, the third ionization energy versus taking a second electron out of the 2 s in a photoelectron spectroscopy experiment, those are two very different things.

如果你遇到一个题目问你的是，比如说，是第三电离能,还是在光电子能谱实验中从，2，s，轨道中,拿走第二个电子，这可是两个完全不同的问题。

麻省理工公开课 - 化学原理课程节选

You wouldn't be expected to be able to guess that this would happen, because using any kind of simple theory, we would, in fact, predict that this would not be the case, but what we find experimentally is that it's more stable to have half filled d orbital than to have a 4 s 2, and a 3 d 4.

你们不用预期有能力,猜出这个会发生，因为使用任一种简单的理论，我们事实上可以预测不会是那种情况，但是我们在实验中发现的,是半填充d轨道比,4s23d4更加稳定。

麻省理工公开课 - 化学原理课程节选