In order to master grammar knowledge, it is necessary to practice as much as possible.

为了掌握语法知识，尽可能多做练习是有必要的。

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If you want knowledge, you must take part in the practice of changing reality.

你要有知识， 你就得参加变革现实的实践。

《新英汉大辞典》

Knowledge originates in practice.

认识来源于实践。

《新英汉大辞典》

This report is launched together with a partner UNESCO publication entitled Protecting Education from Attack: A State-of-the-Art Review, in which several experts assess current knowledge and practice on preventing and responding to such attacks.

UNESCO: Education Under Attack: UNESCO launches new report

But in practice, the knowledge problem and public-choice problems make such an ideal bank an illusion.

FORBES: The Federal Reserve's Flawed Approach To Monetary Policy