But economists reply that decisions based on limited information and crude calculations may in fact reflect rational behavior.

但是经济学家回应道，基于有限信息和拙劣的计算的决策事实上反映了理性的行为。

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Hence, the throughout research to the rheological behavior of wax crude oil, especially at the low temperature, is very important to oil industries.

因此，全面研究含蜡原油的流变性质，尤其是较低温度下的流变性质，对原油工业是非常重要的。

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The effect of molecular weight, molecular weight distribution, molecular structure of the polymer and behavior of the crude oil on drag reducing efficiency are represented.

本文讨论了减阻剂聚合物的分子量、分子量分布、分子结构以及不同物性的原油对减阻率的影响。

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And in some ways, he says, the crude and outlandish images and behavior that typified the minstrel show are still evident in hip-hop and black comedy.

NPR: The Legacy of Blackface

In the first two experiments, the researchers took to the sidewalks near Berkeley and investigated the relationship between car type -- a reliable, if crude, measure of status -- and driver behavior.

CNN: Are rich people more unethical?