This isn't a perfect test -- if the variable contains the comma-separated list of groups "fred,ginger", it will match a tracexsl:trace value of "red".

这不是一个完美的测试 — 如果这个变量包含一列用逗号分隔的组“fred,ginger”，则它将匹配 tracexsl:trace 的值 "red" 。

to request that you add tracing only to templates marked as belonging to the "fred" and "ginger" groups.

以要求仅向那些标记为属于“ fred ”和“ ginger ”组的模板添加跟踪。