Randomized controlled trials的用法和样例：
例句
- During the randomized controlled trial, there was a nonsignificant trend favoring active treatment.
在随机对照试验中，出现一个有利于治疗组的非显著性趋势。 - The potential value of DHEA therapy for women still requires exploration in adequately powered well-designed randomised placebo-controlled trials.
脱氢表雄酮对女性的潜在治疗价值需要充分有力精心设计的随机安慰剂对照试验来探索。
