This paper analyses the evolution tendency of urban system under the competition environment.

探讨了竞争环境下，城市制度的演进方向。

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According to the data obtained from our observation, we summarized the evolution tendency of ld patterns in different phases under different amplitude and frequency of electric field qualitatively.

根据实验观测所得的大量数据，定性总结了液晶斑图所具有的多种相态，以及它们在不同电压幅值和频率下相互演化的基本趋势。

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But a growing number of mental health experts fear the increasing tendency to take a pill to beat the blues could actually affect human evolution.

但是越来越多的心理健康专家担心，越来越多的人通过药物来对付忧郁甚至可能影响整个人类的进化。

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First, the evolution from an agricultural society to a knowledge society brings out a grim tendency to judge young people harshly.

FORBES: Through Eight Centuries of Criticism, College Remains Worth It