反反復(fù)復(fù)地做同一件事情，不是孩子天生就喜歡的，但是在重復(fù)的過(guò)程中，孩子熟能生巧。
The best way to design a program is to design it.
It seemed the world was divided into good and bad people. The good ones slept better ... while the bad ones seemed to enjoy the waking hours much more.