一定要选择对你最好的姿势，无论是侧睡、仰睡还是伏睡。

Always choose the position that works best for you, whether you're a side, back, or stomach sleeper.

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林教授是纳米结构光子学的专家和光子晶体领域的先锋人物，他说这一新的涂层材料可以运用于几乎所有的光伏材料上。

Professor Lin, an expert in nanostructure photonics and a pioneer in the field of photonic crystals, says that the new coating could be applied to just about any photovoltaic material.

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该塔的特色是集成了光伏系统，该系统采用了时下最先进的太阳能电池板技术。

The tower features integrated photovoltaics, the latest in solar panel technology.

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OK, elements with low average valence electron energy, and here I'm saying below 11 electron volts, these are good electron donors.

平均价电子能都较低的元素，我是指那些低于11电子伏的，这些是很好的电子给体。

麻省理工公开课 - 固态化学导论课程节选

Its average valence electron energy is 5.2 electron volts, which is a heck of a lot less than 11.

它的平均价电子能是,5。2电子伏，那比11电子伏要少得多。

麻省理工公开课 - 固态化学导论课程节选

And let's look at the final kinetic energy that we'd observe in this spectrum, which is 384 electron volts, so what is that third corresponding ionization energy?

然后让我们来看一下,在光谱中观测到的，最后一种动能，它大小是，384，电子伏，那么这相应的第三种电离能是多大？

麻省理工公开课 - 化学原理课程节选