double blind

double-blind的词性：
n.（名词）

1. A testing procedure, designed to eliminate biased results, in which the identity of those receiving a test treatment is concealed from both administrators and subjects until after the study is completed.
双音测试：用以消除偏见的试验步骤，在试验结束之前试验者和受试者都不知道接受试验者的身份

double-blind的音标和读音：