macro-variable
美
英 
例句
there is a distinction between a macro "variable" and a "traditional" variable.
不过宏变量和传统变量之间是有差别的。
A macro variable is expanded "in place" to yield a text string that may then be expanded further.
宏变量会被“就地”扩展,其所产生的文本字符串还可以进一步的扩展。