一个类别的例证具有一个在类别层定义的特定属性值。

Instances of a class have specific values for the properties defined at the class level.

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在创建颜色层后，程序的第一步是读取这些颜色层并生成每个层的平均颜色值。

With the color tiles created, the first step in the program is to read these color tiles and develop an average color value for each tile.

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在某些情况下，希望用tree prompt选择值，但是要求只用特定的一层筛选报表。

In some cases, a tree prompt may be desirable for a value selection, but only one of the levels is required to filter the report.

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