"家庭成员" 用英语可以说为 "family member"。
来源："family" 是指家庭，而 "member" 是指一员。
英文例句：
My mother is a proud family member of our household.
(我的母亲是我们家庭的骄傲的一员。)
Each family member plays an important role in our family dynamic.
(每个家庭成员在我们家庭关系中都扮演着重要的角色。)
All family members should be treated with love and respect.
(所有家庭成员都应该受到爱和尊重。)