Various studies have shown that increased spending on education has not led to measurable improvements in learning.

各种研究表明，教育支出的增加并没有给学习成果带来明显的改善。

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Many studies have shown that this act has many benefits.

许多研究表明，这一行为有很多好处。

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Studies have shown that reading to your unborn child is very good.

研究表明，读书给你未出生的孩子听是非常有益的。

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Studies have shown that activation of the trigeminal nerve may come from a part of the brain called the hypothalamus.

VOA: special.2011.05.03

Studies have shown that the fewer medicines a person has to take the more likely he or she will take them.

VOA: special.2009.04.08

Studies have shown that male circumcision can reduce a man's risk of getting HIV, the virus that causes AIDS.

VOA: special.2009.04.01

Studies have shown that chronic lateness has cost countries such as Ecuador billions per year.

BBC: Are the Swiss really that efficient?

But studies have shown that women who undergo immediate reconstruction following a mastectomy benefit psychologically.

CNN: How surgeons build new breasts

Studies have shown that brain injury increases the risk of violent and aggressive behavior.

CNN: Insights on why people 'snap' and kill