The role represents metadata that describes which property in the business object will be correlated to the properties described in the others roles that are part of the relationship.

角色可以表示相应的元数据，即描述业务对象中的哪个属性将与该关系的其他角色中所描述的属性关联。

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These properties remain the same when others are altered.

这些性质在其它性质改变时保持不变。

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The role represents metadata that describes which property in the business object is correlated to the properties described in the others roles that are part of the relationship.

角色代表元数据，描述业务对象中的哪个属性与属于该关系的其他角色中描述的属性相关联。

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Middleton became a seller in 2004 when he saw others buying rental properties at prices that only made sense by assuming greater fools would come along and pay even more.

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Also, there are certain teams that are assigned specifically to DLC while others are assigned future properties.

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He said the council had to ensure the safety of people using council properties and others people being intimidated.

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