To fly, of course, is the fastest way, but you can't see anything during your stay in the air but the blue sky and white clouds.

飞行，当然，是最快的方式，但是在你停留在空中的时候，你看不到任何东西，除了蓝天和白云。

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What is clear is that receptors in the eye react to the visible blue part of the light, to work in such a way with the distribution of the sleep hormone melatonin.

很清楚的是，眼睛内的受体对可以察觉的蓝光部分会有所反应，以这样一种方式与所分布的睡眠褪黑激素起作用。

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Dan Buettner, the author of Thrive: Finding Happiness the Blue Zone Way, set out to find the happiest places on earth, and he thinks he's discovered four contenders on four different continents.

《兴旺：以蓝宝地的方式寻找快乐》的作者丹·比特纳，出发去寻找地球上最幸福的地方，他认为他在四大洲发现了四个城市。

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And UC Davis researchers figured out a way to engineer blue-green algae to make fuel from sunlight.

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He had come a long way to this blue lawn, and his dream must have seemed so close that he could hardly fail to grasp it.

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The stars that salted the sky when I first woke are giving way to a vibrant Maxfield Parrish blue with chalky, pasted-on clouds.

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