开车要注意信号灯！同样盲人也是！
The stoplight on the corner buzzes when it is safe to cross the street. I was crossing with a co-worker of mine, when she asked if I knew what the buzzer was for. I explained that it signals to blind people when the light is green. She responded, appalled, "What on earth are blind people doing driving?"
当你可以安全过马路的时候，马路拐角处的指示灯就会发出响声。我正和一位同事一起过马路，她问我知道不知道这响声是干什么用的。我说，这是给盲人的绿灯信号。她胆战心惊地问：“盲人究竟为什么要开车？”