Notice that you can easily rename the field while defining the relationship.

我们注意到，在定义关系时，可以很容易地重命名此字段。

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In today's medical field, little agreement exist on the criteria for defining mental illness.

在今天的医学领域，对界定精神病的标准还没有达成一致。

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After defining a field, you can set its properties.

定义栏位后就可以设定其属性。

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After defining a field, you can set its properties.

定义栏位后就可以设定其属性。

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