What's more, it's impossible to hide the fact that people are receiving Botox, he adds – and that would invalidate the double-blind nature of the experiment.
此外，他还补充道，谁在注射肉毒杆菌素这一事实是无法掩盖的，这会使试验失去双盲性。
The experiment was double-blind-neither the subjects nor the scientists knew which liquid was which-a technique considered especially strong in research science.
因为使了一种被认为特别强的技术，这个实验是双盲的，无论实验对象还是科学家都不知道哪个液体是什么。
DESIGN: Randomly double blind and control experiment.
设计：随机双盲对照实验。
Double blind test was used in whole experiment.
整个实验采用双盲法。
Double blind was used in the experiment.
整个实验采用双盲法。
Double blind was used in the experiment.
整个实验采用双盲法。
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