在参与讨论肉类伦理的学生受试人群中，肉食购买率从52%下降到45%——而且这一影响在研究持续的几周内保持稳定。
Among student subjects who discussed meat ethics, meal purchases containing meat decreased from 52 to 45 percent—and this effect held steady for the study's duration of several weeks.
研究人员必须获得医院或诊所伦理委员会的批准。
Researchers must obtain approval only from their hospitals or clinic's ethics board.
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