That technique did not prove effective enough however.

然而这种方法后来被证明不是那么有效。

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If it is possible for the other party to make a statement that they may avoid the relevant facts, the recording evidence does not prove effective.

如果让对方自己陈述可能会回避相关主要事实，致使录音证据没有证明效力。

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The tournament model and delayed payment model are to prove the existence of internal labor market, not only reasonable, but also effective.

内部晋升的竞赛模型和延期报酬模型向我们证明了内部劳动力市场的存在不仅是合理的，而且是有效率的。

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After his debut half century, Australian Twenty20 specialist David Warner did not prove so effective on his second appearance, making only 19.

BBC: Durham keep Twenty20 hopes alive

These results thus shed light on why, in a series of clinical trials conducted last autumn, leptin treatment did not prove uniformly effective (let alone miraculous).

ECONOMIST: Obesity

Christie Ballantyne, a cardiologist at the Baylor College of Medicine, also sees risks that torcetrapib might not prove an effective way to raise HDL. And he sees another challenge.

FORBES: Pfizer's Big Bet