This methods is effective in practice.

实践证明这种方法是行之有效的。

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It is feasible and effective in practice.

实践证明，该方法是可行且有效的。

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This method is proved to be effective in practice.

经过验证表明该方法是有效的。

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That's why the new regulations that SEBI is now introducing for settlements and the new limits on borrowing to finance share purchases might not be as effective in practice as they appear on paper.

BBC: Angry investors

As a general impetus to speed up the course of justice, citizens would also have a constitutional right to a reasonably speedy hearing, as is enshrined in the constitutions of Mexico and Portugal, although how effective this would prove to be in practice remains open to doubt.

ECONOMIST: The price of justice | The

On a more general note, in order to be effective, a good access management practice has a number of characteristics.

FORBES: Bad Password Management Will Stop You in Your Tracks