differential stimulus

例句：

1. 1. The researchers found that the difference in the two groups was statistically significant.
   研究人员发现两组之间的差异在统计学上是显著的。
2. 2. The study focused on the differential effects of different environmental factors on plant growth.
   该研究专注于不同环境因素对植物生长的不同影响。
3. 3. In this experiment, we tested the hypothesis that there is a differential response to different stimuli.
   在这个实验中，我们测试了假设，即对不同的刺激有不同的反应。