如果需求关系发生重大变化，最好的市场形态和交易系统也会失效。
But even the best market formation and trading system can be over-run by a dramatic change in supply and demand.
正如我在本系列的第2部分解释的那样，当需求关系在需求图外被提出时，这些属性将会变的非常便捷。
As I explain in part 2 of this article, these attributes become particularly handy when requirement relationships are represented outside requirements diagrams.
父母必须准备好与孩子建立新的关系，并努力顾及他们的个人需求和感受。
Parents must prepare for new relationship with their children and attempt to accommodate their individual needs and feelings.
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