Definition
Refers to the people who are most closely related to you, such as your parents, children, and spouse.
直系亲属（如父母、子女、配偶等）
He was the first person in his immediate family to attend university.
他是他直系亲属中第一个上大学的人。
There were several children at the event who were not part of his immediate family.
活动中有几个孩子不属于他的直系亲属。
The opposition group criticized the current government for treating political service as a means to enrich themselves and their immediate families.
反对团体批评现任政府将政治服务作为致富自己及其直系亲属的手段。