controlled randomized trial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。 - Thus, the results of controlled trials and reiews indicate that antifibrinolytic drugs are effectie hemostatic agents in cardiac surgery.
因此，对照试验与回顾结果表明抗纤溶药物是心脏手术有效的止血药。
