Bedeutung von “concern” — Learner’s Dictionary

concern

verb [ T ] us uk /kənˈsɜːn/
These issues concern us all.I only told him the bits that concerned him.Those points don't concern you.He'd highlighted the parts of the report that concerned us.These are matters that concern everyone in this room.
INVOLVE

B2 to involve someone or be important to them:

Environmental issues concern us all.
He's more concerned about profits than the safety of his employees.
WORRY

to worry or upset someone:

What really concerns me is her lack of experience.
BE ABOUT

B2 If a story, film, etc concerns a particular subject, it is about that subject.

concern yourself

to become involved with doing something:

You needn't concern yourself with the travel arrangements.

(Definition von “concern verb” aus dem Cambridge Learner's Dictionary © Cambridge University Press)