Studies such as this suggested that humans wander in an apparently random fashion, similar to a so-called "Levy flight" pattern displayed by many foraging animals.

这样的研究还指出，人们的行踪通常是不经意的，这于在觅食的动物中表现出来的“随机行走”类似。

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Then, a sequence of half-cycle is drawn from the matrix to construct a flight by flight random load spectrum.

然后从矩阵中抽取半循环序列，构成飞-续-飞随机谱。

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Officials know perfectly well that passengers will already have imbibed all the fructarian juices imaginable on the ground and will welcome the alternative of these expensively imported, highly calorific pop drinks to keep their energy levels up during random in-flight activities like mass seat changes and locating serviceable toilets.

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The flight disruptions this week "have been so sporadic and random, " Mr. Duell said.

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