Such an interaction represents a sequence of inter-object communications of arbitrary complexity.

这样的交互性表现在内部对象间任意复杂的通信。

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The as attribute in the first XSL: variable element instructs the XSLT processor to leave the value of the variable as a sequence of arbitrary items, not convert it to an RTF.

第一个xsl： variable元素中的a s属性告诉XSLT处理程序将变量的值作为一个序列，而不是将其转换为rtf。

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Finally, we'll add an arbitrary 30-second sleep to ensure the command sequence finishes after the two subshells do.

最后，我们添加任意30秒的休眠时间，确保两个subshell完成之后命令序列完成。

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