Chapter 3 is the positive study of the contribution that China's vocational education makes to the growth of national economy.

第3章为我国职业教育对国民经济增长贡献的实证研究。

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A positive learning attitude can not only improve the quality of study but also lay a good foundation for lifelong learning.

积极的学习态度不仅能提高学习的质量，而且能为终身学习打下良好的基础。

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In the Nun Study and the Mills College research, a measure of early positive expression determined the effect of this positivity over the lifespan.

在《修女研究》和米尔斯学院的研究中，有一项早期的积极表达方法决定了对寿命的正面影响。

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For a case study in the positive power of regret consider the case of Tom Cox.

WSJ: The Experts: Dealing With Regret

The feds alleged the company touted one positive study of Celexa in adolescents, while not mentioning the fact that another big study in adolescents had failed to show any effect.

FORBES

Flying Dog advertises its status as the favoured drink of the celebrated radical journalist Hunter S Thompson, and a 2012 study found a positive correlation between the concentration of microbreweries in a state and its likelihood to vote for Barack Obama.

BBC: US craft beer: How it inspired British brewers