2 \) ]/ i. D( FTheory is when you know everything but nothing works.* e0 J9 T2 r8 q6 d7 z7 Q `
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Practice is everything works but no one knows why. $ w" s5 O+ M) v& B# }. a' u$ h2 J& z0 F5 d
这两天的情况是:Theory and practice are combined: nothing works and no one knows why.