According to one study, each high school graduate contributes at least 500,000 dollars to the local economy.

一项研究表明，每个高中毕业生至少为当地经济贡献了50万美元。

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According to one study, students' academic performance is not the only decisive factor of their stress responses.

根据一项研究，学生的学习成绩并不是他们压力反应的唯一决定性因素。

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According to one study, hyperforin content correlates with therapeutic effect.

根据一项研究，贯叶金丝桃素含量与治疗效果相关。

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Almost 50% of black women had zero or negative wealth, according to one study.

CNN: How threat to Planned Parenthood hurts black mothers

In fact, according to one study, voters in certain cases can prefer obese to non-obese candidates.

CNN: Chris Christie's weight: Why it matters

According to one study, 72% of Zambian households care for one or more orphans.

ECONOMIST: Orphans of the virus