The agriculture revolution in the nineteenth century involved two things: the invention of labor-saving machinery and the develo

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问题 The agriculture revolution in the nineteenth century involved two things: the invention of labor-saving machinery and the development of scientific agriculture. (Passage 3)

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答案19世纪的农业革命包括两件事情:节省劳动力的机器的发明和科学农业的发展。

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