I like talking with my friends in private calls.

He has a thorough knowledge of computer science.

This medicine has an analgesic effect.

This word is not only used in Japan, but also common around the world.

He is well versed in mathematics.

There are many points in common in our hobbies.

His criticism was severe.

I was surprised by his severe criticism.

He often takes time off work due to migraines.

He waited for the ambulance while enduring sharp pain.