John is familiar with the business.

He is at home on batting.

He is quite at home with computers.

Savvy.

He is completely at home in physics.

He acquainted himself with his job.

He is quite at home in English.

He is at home in French.

Jane is familiar with the Japanese language.

She is quite at home in English.

He is at home in American literature.

He is well acquainted with ancient history.

He is familiar with the entertainment world.

He is well versed in geometry.

He is well acquainted with the history of England.

He is well acquainted with French literature.

He is very knowledgeable about French literature.

He is familiar with this computer.

Junko is quite familiar with English.

I'm at ease in English.

I'm comfortable in English.

I'm at home in English.

I am familiar with this subject.

I am familiar with this computer.

But it is a place where sex workers and their clients come.

Let the fairies guide you.

He has the subject at his fingertips.

He is thoroughly familiar with the business.

He is familiar with four languages.

I am familiar with this subject.

I am wellversed in all the customs...

My guy is a top... ...guy.

The first study up.

Dr. Faust was well versed in alchemy.

He has a good knowledge of Japanese religion.

He is at home with the geography of Tokyo.

He is at home in modern English literature.

We know we're looking for someone trained in medicine.

Sir, I am fluent in six million forms of communication.

He's patient with you, and he's always there for you.

He seems to be at home in Greek literature.

And so the length of the radius is 2cm.

His background is in deep biotechnology.

He is at home in a variety of fields.

He has good knows of every field.