translation.en: So about that time, the National Federation of the Blind, or NFB, challenged the research committee about who can develop a car that lets a blind person drive safely and independently.
translation.zh: 大概那个时候， 全国盲人协会，或盲协， 对设计团队提出了挑战 关于谁能设计出一辆 能让盲人独立安全驾驶的汽车。