The two economists looked at an invention called the spinning jenny that made it easier to turn cotton and wool into yarn.

这两位经济学家研究了珍妮纺纱机，它使棉花和羊毛更容易变成纱线。

Before he died he saw the wheat fields of North Dakota linked with the spinning jennies of Manchester and the docks of Yokohama.

在他去世之前，他看到了北达科他州的麦田与曼彻斯特的纺纱珍妮和横滨的码头相连。

It was then that the daughters of the Puritans, outdone by the competition of foreign labor, both of men and women, left the spinning jenny and the loom to other hands.

就在那时，清教徒的女儿们在外国劳动力的竞争中不甘示弱，无论男女，将珍妮纺纱机和织布机留给了其他人。