It is difficult to express the good knowledge relation and construct a field knowledge model.

如何表示好知识关系，构建领域知识模型，难度很大。

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However, some model based on KDD technology is more complicated or needs certain field knowledge, which is subjective.

但是，有的知识发现技术建立的模型要么比较复杂，要么需要一定的先验知识、具有主观性。

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The problem that deficiency of field knowledge leading to a great deal of irrelevant rules is solved by applying aggregation emerging patterns classification.

通过采用聚集显露模式分类，克服了因领域知识不足而导致的大量不相关规则的问题。

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But your food shall be the grasses of the field; By the sweat of your brow Shall you get bread to eat" So knowledge or wisdom or perhaps moral freedom seem to come at a very high price.

你也要吃田间的菜蔬;,你必须汗流满面,才得以糊口“,所以，人类为得到智慧，道德自由,付出了极大的代价。

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You also can run around on a wide open field with little knowledge of the game and any number of players.

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Transit experts have praised Mr. Prendergast's work over the past three months, saying he would be the right choice to lead the agency given his long years in the field and extensive knowledge of the bureaucracy's moving parts.

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For decades it has not only generated wealth in scientific knowledge in the field of tropical ecology but it has systematically and successfully disseminated this knowledge to professionals and the general public through education, training and awareness raising.

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