在十九世纪的美国，法语被认为是高尚的语言和上流社会的语言。
And French was the language of refinement and high society through the 19th century in the United States.
十九世纪的美国处于工业社会，同时又是父权制社会。
The nineteenth century America was an industrial society as well as a patriarchal society.
十九世纪末二十世纪初的美国社会正处于大变革的年代，进步教育运动正是在这种特有的社会背景下产生的。
The turn of the 20th century witnessed the social turmoil in the United States of America while the Progressive Education Movement rose up.
十九世纪末二十世纪初的美国社会正处于大变革的年代，进步教育运动正是在这种特有的社会背景下产生的。
The turn of the 20th century witnessed the social turmoil in the United States of America while the Progressive Education Movement rose up.
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