John Lott of the University of Maryland argues that short-term fluctuations in the crime rate are fairly idiosyncratic, and that trends should be observed over a longer period.

马里兰大学的约翰·洛特认为短期内犯罪率的浮动有一定特殊性，而想掌握犯罪趋势则应通过长期的观察。

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But I do not believe in changing your long-term strategy based on some short-term fluctuations.

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Near term fluctuations in market share will not matter between Google and Apple for some time.

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It delivers sand under long-term, "take or pay" contracts that reduce the company's exposure to short-term fluctuations in the price of sand.

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