yán jiū tuán duì / wéi / pái chú / ān wèi jì / xiào yìng / lìng wài / shè zhì / yí gè / guī mó / xiāng jìn / de / duì zhào zǔ

研究团队为排除安慰剂效应，另外设置一个规模相近的对照组。

To rule out the placebo effect, the research team set up another control group of a similar size.