He has deep professional knowledge in this field.

他在这个领域有很深的专业知识。

This book provides a wealth of professional knowledge.

这本书提供了丰富的专业知识。

Buying securities requires some professional knowledge.

购买证券需要一定的专业知识。

He acquired professional knowledge during his time at university.

他在大学期间习得了专业知识。

Installing a liquid cooling system requires professional knowledge.

液冷系统的安装需要专业知识。

Her professional knowledge helped her solve many problems.

她的专业知识帮助她解决了很多问题。

You need more professional knowledge to complete this task.

你需要更多的专业知识来完成这项任务。

We need someone with professional knowledge to guide us.

我们需要一个有专业知识的人来指导我们。

An assessor needs to have extensive professional knowledge and experience.

审核员需要具备丰富的专业知识和经验。

Solid professional knowledge and skills;

扎实的专业知识和技能；