wiedza zawodowa v angličtině:

That's outside my area of expertise.

He lacks any expertise in this field.

A professional chef should have extensive expertise in cooking.

I've got a few friends that are in need of your expertise.

You know how much I appreciate your expertise.

We provide broad services to the computer end users, based on our experience and technical expertise.

expert skill or knowledge in a particular field. "technical expertise"

This new job is a great opportunity to show people your expertise.

expertise = high level of skill or knowledge

I think we should hire Francesca, because we really need her IT expertise in this company.

I strongly believe that their expertise will give an added value to our institutions.

the technical expertise of the engineers

Your expertise is required because you’ve been specially trained to do the job.

Today we're talking about something we have some expertise in or knowledge about. That's teaching English.

If you have problems with low libido my suggestion is to go see a doctor or someone with expertise on this issue.