experimental stuff

例句：

1. 1. This is an experimental design for testing the effectiveness of new drugs.
   这是一个用于测试新药有效性的实验设计。
2. 2.The scientist conducted several experiments to gather data for his research.
   这位科学家进行了几次实验，以收集数据进行他的研究。
3. 3. Experimental results showed that the new technology could significantly improve efficiency.
   实验结果表明，新技术可以显著提高效率。