trial test

例句：

1. 1. The engineer conducted a thorough trial test of the new machine before deploying it on production lines.
   工程师在将新机器部署到生产线之前，对机器进行了彻底的试验测试。
2. 2. Before starting the trial test, the team reviewed the data thoroughly to ensure accuracy.
   在开始试验测试之前，团队彻底审查了数据以确保准确性。
3. 3. The company conducted several trials to optimize its product design for better performance.
   该公司进行了几次试验，以优化其产品设计，以提高性能。