在随机研究中，一部分受试者给予阿司匹林另一部分给予安慰剂。

In a randomized manner, some were given aspirin and some were given placebos.

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在随机研究的力度的基础上，专家组推荐伏立康唑作为这些少见部位侵袭性曲菌病的用药首选。

Based on the strength of the randomized study, the panel recommends voriconazole for primary treatment of these very uncommon manifestations of invasive aspergillosis (B-III).

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方法：在随机研究中，我们纳入了2521例稳定性左心功能不全的心力衰竭患者，比较ICD治疗、胺碘酮治疗或单用优化药物治疗对生命质量的影响。

Methods In a randomized trial, we compared ICD therapy or amiodarone with state-of-the-art medical therapy alone in 2521 patients who had stable heart failure with depressed left ventricular function.

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Right. Another way of saying it is there isn't random assignment of the subjects to the two conditions in the study.

换种方式说,受试者并不是随机安排在,这个研究中的两种情况下。

耶鲁公开课 - 心理学导论课程节选

Do I go out to Harvard yard and take a random sample ? of sophomores to study meditation?

是不是可以在哈佛大二学生里随机抽样,来研究冥想？

哈佛公开课 - 幸福课课程节选