It has no practical meaning or practical application.

它没有实际意义或实际应用。

This discussion is not meant to be an esoteric presentation with little practical meaning in your daily lives.

这个讨论并不意味着是一个在你的日常生活中没有什么实际意义的深奥的介绍。

Designing products that have practical meaning by applying the knowledge I have acquired is where my true passion lies.

运用所学的知识设计出具有实际意义的产品是我真正的激情所在。

And my dad was very practical, meaning my dad wanted me to go to school to learn to trade so I could then support a family someday.

我爸爸非常务实，他希望我去学校学手艺，这样将来就能养家糊口。