The action taken by the assembler when it replaces a variable symbol with a value , for example , during the expansion of a macro definition.

汇编程序采用的一种动作，例如在宏定义展开时，它用一个值来代替一个变量符号。

youdao

For formal use, the variable can be marked with a "#" symbol -- or "#1", "#2", and so forth -- if multiple variables exist in one sentence.

对于正式的使用，如果一个句子中存在多个变量，则变量可以用“#”符号（或“#1”和“#2”等）作为标记。

youdao

A symbol is any variable that is preceded by a colon (:), and what's even neater is that symbols themselves are objects!

符号是前面有冒号(：)的任何变量，更妙的是符号本身也是对象！

youdao