somebody's area of expertise

Each brought their own area of expertise and experience to the project.

His other areas of expertise include film, television, and popular music.

His areas of expertise are community development, housing, race and the economy.

I think that it was more likely your area of expertise.

Many areas of expertise come into play and are needed.

But you should know that this is not my area of expertise.

Then maybe they would understand what happens when people work outside their area of expertise!

I cannot help but wonder what his own area of expertise is.

Science teachers and some parents coach in their areas of expertise.

They come to me, and that's not my area of expertise.