translation.en: It sounds like a cacophony, but after several weeks, blind people start getting pretty good at understanding what's in front of them just based on what they're hearing.
translation.zh: 虽然听上去很刺耳， 但是几周之后， 盲人就开始很好地习惯 通过听觉信号， 来理解在他面前的事物。