多个单独的、不连接的图形组合在一起，形成一个图形元素。

These are shapes in which separate, disconnected shapes are grouped together to form a single shape element.

youdao

用户平均使用的节点数为五个，这意味着总共可以产生不到8000个可能的图形组合。但如果只使用四个节点，那么这个数字将会降到1624。

The average number of nodes used was five, meaning there were less than 8,000 possible pattern combinations, but this dropped to just 1,624 for four node patterns.

youdao

通过组合多个图形可以做到这一点。

This can be done by composing multiple figures.

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What I have up there on the diagram are calculations I made for the efficient portfolio frontier with three assets.

上面的图形是我已经算好的,三种资产的有效投资组合边界。

耶鲁公开课 - 金融市场课程节选