随机试验法
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random trial method
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When trying to find out if something will work - be it a new policy, a new drug, a new teaching method - the gold standard of evidence is what comes out of a properly conducted random controlled trial.
BBC: NEWS | Programmes | More Or Less | The truth behind statistics
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