Never embark on what comes after without having mastered what goes before. 如未掌握好已学过的东西,切莫从事更深的学习。 谚
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Never embark on what comes after without having mastered what goes before. 如未掌握好已学过的东西,切莫从事更深的学习。
Never embark on what comes after without having mastered what goes before. 如未掌握好已学过的东西,切莫从事更深的学习。