[問題]OG在說小孩子價值那篇

[oneseven]

現在正在努力練習大衛閱讀法
但是下面這個句子讓我困惑了..請大家教教我如何快速讀懂

During the nineteenth century, she argues, the concept of the "useful" child who contributed to the family economy gave way gradually to the present-day notion of the "useless" child who, though producing no income for, and indeed extremely costlt to, its parents, is yet considered emotionally "priceless."

落落長的一句話讓我困惑了 請大家好心指點 謝謝

[dibert8]

During the nineteenth century, she argues (that){ , the concept of the "useful" child who contributed to the family economy gave way gradually to the present-day notion of the "useless" child who, though producing no income for, and indeed extremely costly to, its parents, is yet considered emotionally "priceless." }