专业知识用英语怎么说

专业知识用英语可以说为 "professional knowledge" 或者 "expertise"。

以下是几组专业知识用英语怎么说的中英双语例句：

1. 他对金融领域有很深的专业知识。

He has a deep expertise in the field of finance.

2. 这个项目需要一些专业知识才能完成。

This project requires some professional knowledge to complete.

3. 我们的员工需要不断学习以提高他们的专业知识。

Our employees need to constantly learn to improve their professional knowledge.

4. 他的专业知识帮助他在工作中取得了很大的成功。

His professional knowledge helped him achieve great success in his work.

5. 这个培训课程旨在提高学员的专业知识和技能。

This training course aims to improve the professional knowledge and skills of the participants.