trial techniques
试验技术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Animals, too, have been genetically engineered, mostly by laborious and imprecise trial-and-error breeding techniques.
FORBES: Frankenfish Fatuity
The clinical trial he had been taking part in was testing new techniques for treating knee cartilage problems.
BBC: England
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