皓首穷经

  • na.A hoary head does research in the classics - - an aged person still learns.
  • 网络continued to study even they were hoaryheaded

皓首穷经皓首穷经

皓首穷经

continued to study even they were hoaryheaded

... art is long,life is short 学无止境 continued to study even they were hoaryheaded 皓首穷经 remain as before 依然如故 ...

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