The Canadian researchers randomly assigned about half of the addicts to receive methadone and the other half to receive daily injections of diacetylmorphine, the active ingredient in heroin.
加拿大研究者对【将】受验者随机分组,一半接受沙酮治疗,另一半每天接受注射二乙酰吗啡,主要成分是海【为海主要成分】。
The Canadian researchers randomly assigned about half of the addicts to receive methadone and the other half to receive daily injections of diacetylmorphine, the active ingredient in heroin.
加拿大研究者对【将】受验者随机分组,一半接受沙酮治疗,另一半每天接受注射二乙酰吗啡,主要成分是海【为海主要成分】。
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