These statements use a method named insert to update the knowledge in the rules engine.

这些语句使用一个名为insert的方法更新规则引擎中的知识。

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A field's hook method is named _set_ [field name] , and it gets called whenever a value is about to be set for that field, whether as part of a create operation or an update operation.

字段的钩子方法命名为_ set _ [field name]，不管是作为create操作还是update操作的一部分，每当要为该字段设置一个值时，都会调用该方法。

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