Whenwecanseewell,wedonotthinkaboutoureyesoften．Itisonly...
問題詳情：Whenwecanseewell,wedonotthinkaboutoureyesoften．Itisonlywhenwecannotseeperfectlythatwecometoseehowimportantoureyesare． Peoplewhoarenearsightedcanonlyseethingsthatareveryclosetotheireye...