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The last bus stop device has voice only.If you are in a strange city,or you just keep drifting awy, or you are a deaf,You may miss your destination.Now,the word are moved inside the upper cross bar and with the red light.It will help you to confirm your destination.
ChongQing University
ChongQing, China
ChongQing University
ChongQing, China
jiayin Dai
junyan Sun
yixi Hu
xiao Li