trial group

例句：

1. 1. The team was divided into several trial groups for testing different strategies.
   团队被分成几个试验组，用于测试不同的策略。
2. 2. The researchers conducted a trial group of participants to evaluate the effectiveness of their new drug.
   研究人员对一组参与者进行了试验，以评估他们新药的有效性。
3. 3.The company conducted a trial group of customers to gather feedback on their new product.
   公司对一组客户进行了试验，以收集他们对新产品的反馈。