安慰剂效应是指一个没有治疗效果的物质，但如果你相信它有，就会起到一定的作用。
The Placebo effect is when an ineffectual substance that is believed to have healing properties produces the desired effect.
凡是用过那个让人感觉安慰的词儿“一杯好茶”的人，无一例外都是指的印度茶。
Anyone who has used that comforting phrase 'a nice cup of tea' invariably means Indian tea.
结论：我们的研究表明射频关节突关节去神经术不是一种起安慰剂作用的治疗，可以用于治疗有明确手术指征的慢性下腰痛患者。
Conclusion. Our study indicates that radiofrequency facet denervation is not a placebo and could be used in the treatment of carefully selected patients with chronic low back pain.
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