double-blind studyˈdʌbəlblaɪndˈstʌdi短语¹⁴⁴⁹⁷²⁺² 基本英英近义反义 双盲研究 Noun: an experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment;
a double-blind procedure is used to guard against both experimenter bias and placebo effects