一个模型可能包含了数百个工件，这样我们可能需要将它们分组的方法，或者从其他的符号中进行一些区别。

A model may contain hundreds of artifacts, so we might need ways of grouping them or differentiating a few symbols from the others.

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您可以在诸如节中包括想要包括的任何图形元素，其中包括组和元素(符号与组类似；由于本文篇幅所限，这里不对其区别进行说明)。

You can include whatever graphic elements you like in a section, including groups and elements (symbols are similar to groups; this article does not have room to address that distinction).

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考虑到惟一性，您可能需要在属性名前加上一个能够被视图或操作识别的区别符号。

You may need to preface the property name with a distinguisher identifiable by the view or action for uniqueness.

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