two-point limen

例句：

1. 1. The experiment was designed to measure the two-point limen of the human eye.
   这个实验旨在测量人类眼睛的两点敏感度。
2. 2. The scientist used a two-point limen test to determine the optimal concentration for the solution.
   科学家使用两点敏感度测试来确定溶液的最佳浓度。
3. 3.In his research, he found that the two-point limen is crucial for detecting small changes in the environment.
   在他的研究中，他发现两点敏感度对于检测环境微小变化至关重要。