It is the young who demonstrate that there is a sense of continuity in a family, and that was what I was looking for.

continuity 是名词，来自形容词 continuous（连续的），由词根 continu(e)（继续）和后缀 -ity（表示性质或状态）组成，意思是"连续性、持续性"。在这里指家庭代际之间的传承和延续。