retentivity time of eye

例句：

1. 1.The patient's retentivity is crucial for recovery.
   患者的保持力对于康复至关重要。
2. 2.The scientist used a variety of techniques to enhance the material's retentivity.
   科学家使用多种技术来提高材料的保持力。
3. 3.The team's focus on detail has greatly improved their work's retentivity.
   团队对细节的关注大大提高了他们的工作保持力。