narrowing of conscious span

例句：

1. 1. The patient's consciousness was narrowing as the pain intensified.
   随着疼痛加剧，病人的意识正在缩小。
2. 2. The researcher found that the narrowing of consciousness could be a factor in the developmentof Alzheimer's disease.
   研究者发现，意识的缩小可能是阿尔茨海默病发展的因素之一。
3. 3.As the patient recovered, his awareness of his surroundings began to narrow.
   随着患者的恢复，他对周围环境的感知开始缩小。