Translation of "both parents" into Japanese

Some Japanese may continue to sleep with both parents even during elementary school days.

日本人の中には、小学生になっても両親と一緒に寝ているものさえいる。

Many of the principles in this series of articles may also be helpful to families with both parents.

この一連の記事に出てくる指針の多くは,二親のいる家庭にも当てはまります。