求翻译：因而在西欧封建社会内部形成了城市和封建庄园两大经济中心，它们之间不断进行手工产品和农产品的双向交流，从而城市经济成为封建经济的离心力量。是什么意思？

Thus the formation of feudal society in Western Europe, the city's two major economic centers and the feudal manor, among them the ongoing manual two-way communication products and agricultural products to the urban economy as the centrifugal forces of feudal economy.

Thus, in western European feudal society was formed within cities and feudal manor two major economic centers, and their ongoing artisanal products and agricultural products between the two-way communication, and thus became a feudal economic urban economy the centrifugal forces.

Thus has formed the city and the feudal manor two big economic centers in the Western Europe feudal society interior, between them carries on the manual product and the agricultural product two-way exchange unceasingly, thus the urban economy becomes the feudal economy the centrifugal strength.

Within the Western European feudal society form the cities two major economic centers and feudal Manor, they're all ongoing two-way exchange of hand-made products and agricultural products, thus urban economies become feudal economy of centrifugal force.

Therefore has formed the city and feudal economic center of manor two major during the West European feudal society, carrying on the two-way exchanges of craft products and agricultural product constantly between them, thus the urban economy becomes at odds with the community or the leadership stren