Have you ever seen a blind person using a white cane? It’s a tool that helps people with vision problems walk safely on their own. It allows them to detect objects and move around safely. The white cane not only helps them navigate their environment but also shows others that the person using it has limited vision. Walking canes have been around for thousands of years, but white canes didn’t become widely used until after World War I. In 1921, James Biggs, an English photographer, lost his sight in an accident.
你是否曾看过视障者使用白手杖？这是一个帮助有视力问题的人独立且安全行走的工具。它让他们能察觉到物体并安全地移动。白手杖不仅帮助他们确定环境中的方向，也向他人显示使用者的视力有限。手杖已存在数千年之久，但白手杖至第一次世界大战结束后才广泛使用。1921 年，一位名叫詹姆士．毕格斯的英国摄影师在一场意外中失明。
生活必备字词：
vision n. 视力（不可数）
detect vt. 发现，察觉
photographer n. 摄影师
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本文节录自《常春藤生活英语》杂志，完整内容请见八月号。
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