My dadu, my father’s father, was bipolar: he had long periods of deep depression, when he would barely move or talk, followed by short highs when he had the irrepressible energy of a five-year-old.

Over speed is one of the most important and non-negligible factors caused accidents., 影响安全的因素很多，其中超速是一个不容忽视的重要因素。

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These iconic sci-fi openings span from the dawn of humanity to dystopian Los Angeles, to a galaxy far, far away.