7 s Y6 b% t' T- m5 }4 Q- \& ETheory is when you know everything but nothing works. & M& R0 w E! y& E) D % d" W, P+ \0 M2 A0 zPractice is everything works but no one knows why.# [8 G. `& }" r8 V/ Z& a" P9 T
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这两天的情况是:Theory and practice are combined: nothing works and no one knows why.