The measures are based on test results, and have been Proved effect in practice.

这此措施以试验结果为依据，经生产实践证明是有效的。

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The effect has proved hard to reproduce.

这种效果经证实很难再造。

《柯林斯英汉双解大词典》

Wrong, he and colleagues proved in 2006: the variants have no effect on osteoporosis.

错啦，他和同事们在2006年证明该变异对骨质酥松没有影响。

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Mr Ahern said it had proved a positive effect not only on the health of the nation, "but also on the functioning of our health services".

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Two kinds of policy in particular have been proved to have a big effect on poverty, aside from their influence on overall growth.

ECONOMIST: The poor who are always with us

But until now evidence of a similar effect on humans has proved inconclusive.

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