proven是什么意思？

There are many commonly held beliefs about eye glasses and eyesight that are not proven facts.

Pre-K advocates insist it is proven and will succeed if integrated with the rest of the child's schooling.

Hope has proven a powerful predictor of outcome in every study we've done so far,'said Doctor Charles R. Snyder, a psychologist, who has devised a scale to assess how much hope a person has.

But there are nonetheless several empirically proven benefits.

Congress needs to find the courage to allow Medicare to pay preferentially for treatments proven to be superior.

That would be true only if you believed that patients should have an unrestrained right to treatments proven to be inferior.

While yoga and meditation are scientifically proven to reduce stress levels, these programs do little to target the root causes of burnout and disengagement.