This term is used especially for plants like herbs that produce new growth year after year from the same root structure.

VOA: special.2009.07.21

And so this household structure becomes very important for the growth and structure and even the theology of Christianity eventually.

所以这种家户结构,对于基督教的发展，结构及神学,有着极其重要的影响。

耶鲁公开课 - 新约课程节选