Whenwecanseewell,wedonotthinkaboutoureyesoften．Itisonly...
问题详情：Whenwecanseewell,wedonotthinkaboutoureyesoften．Itisonlywhenwecannotseeperfectlythatwecometoseehowimportantoureyesare． Peoplewhoarenearsightedcanonlyseethingsthatareveryclosetotheireye...