Blood Idioms (American idioms) 美式慣用語
explanation : Refers to a trait or talent that someone
seems to have naturally. It may be a talent that is present in the person's
family (as in the expression, “runs in the
family”). If a person has a grandfather and
father in the army, we may say “The army is in
It's no wonder the Kenndeys always go into politics.
It's in their blood!