laser cane

例句：

1. 1. She used a laser cane to navigate the dark night.
   她用激光杖在黑暗中导航。
2. 2. The laser cane was a lifesaver for him during his recent surgery.
   激光杖在他最近的手术中救了他的命。
3. 3. The elderly man used his laser cane to help himself get around.
   这位老人用他的激光杖帮助自己行走。