十九世纪90年代，美国对金本位制度的依附引发了通货紧缩，击垮了负债累累的农民。
In the 1890s America's adherence to the gold standard brought on deflation that crushed debt-laden farmers.
同时，依附于掌握该技术的农民及农业技术人员身上，更多地需要和技术劳务输出相结合。
Meanwhile export of technical work that combining with upon on technical farmer as well as technician of agriculture are further more needed.
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