+ V1 V8 @" q6 [, m0 m; ~Theory is when you know everything but nothing works.% W9 [0 r' m3 l" }* @
/ _ F. ]" ~1 L/ S' C0 X6 pPractice is everything works but no one knows why.7 n# s( P) ?6 @) S& O) O$ d
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这两天的情况是:Theory and practice are combined: nothing works and no one knows why.