家庭和睦在英文中可以说作 "harmony in the family"。这个短语来源于拉丁语，原意为 "和谐"。

例句：

A harmonious family is essential for a happy life. (家庭和睦对快乐生活至关重要。)

It's important to maintain harmony in the family by communicating openly and resolving conflicts peacefully. (通过坦诚沟通和和平解决冲突来维护家庭和睦是非常重要的。)