Question

The historian Frederick J. Turner wrote in the 1890's that the agrarian discontent that had been developing steadily in the United States since about 1870 had been precipitated by the closing of the internal frontier—that is, the depletion of available new land needed for further expansion of the American farming system. 034  标志： The historian Frederick J. Turner wrote   /in the 1890's / that the agrarian discontent   (that had been developing steadily in the United States since about 1870) had been precipitated /by the closing of the internal frontier   —［that is, the depletion of available new land (needed for further expansion of the American farming system)］/.  解释：   典型的句子套句子。主句是Frederick J. Turner wrote that，宾语从句中主干是the agrarian discontent had been precipitated /by the closing of the internal frontier   ，在从句的主语the agrarian discontent后面又来了一个定语从句。 4

Accepted Answer

gre  意群训练： The historia   n Frederick J. Turne   r wrote in the 1890'   s that the agrarian discontent tha   t had been developin   g steadily in the United States since about 187   0 had been precipitated b   ythe closing of the internal frontier—that is   , the depletion o   f available new lan   d needed for further expansion of the American farming system.   译文： 历史学家FJT   /在19世纪90年代/写道   ，（自从1870年开始就在美国持续发展的）农民的不满 是被内部边疆的消失所加剧的   ，［而内部边疆的消失即指（所需进一步扩展美国农业系统的）可资利用的新土地的枯竭。］ 复杂修饰

en	The historian Frederick J. Turner wrote in the 1890's that the agrarian discontent that had been developing steadily in the United States since about 1870 had been precipitated by the closing of the internal frontier—that is, the depletion of available new land needed for further expansion of the American farming system.
category	gre
idx	034
parts	意群训练： The historia n Frederick J. Turne r wrote in the 1890' s that the agrarian discontent tha t had been developin g steadily in the United States since about 187 0 had been precipitated b ythe closing of the internal frontier—that is , the depletion o f available new lan d needed for further expansion of the American farming system.
mark	标志： The historian Frederick J. Turner wrote /in the 1890's / that the agrarian discontent (that had been developing steadily in the United States since about 1870) had been precipitated /by the closing of the internal frontier —［that is, the depletion of available new land (needed for further expansion of the American farming system)］/.
cn	译文：历史学家FJT /在19世纪90年代/写道，（自从1870年开始就在美国持续发展的）农民的不满是被内部边疆的消失所加剧的，［而内部边疆的消失即指（所需进一步扩展美国农业系统的）可资利用的新土地的枯竭。］
explain	解释：典型的句子套句子。主句是Frederick J. Turner wrote that，宾语从句中主干是the agrarian discontent had been precipitated /by the closing of the internal frontier ，在从句的主语the agrarian discontent后面又来了一个定语从句。
type	复杂修饰
score	4

Agrarian J Wrote Discontent Precipitated Closing Internal Frederick