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
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。