n.代替；替换；交换
The substitution of coal for oil is desirable. 以煤代替石油是可取的。
It was merely the substitution of one piece of nonsense for another. 这不过是用一个谎话来代替另一个谎话。
They're studying a substitution for the medicine. 他们正在研制一种该药的替代品。
The South Korean coach requests substitution. 韩国队教练要求换人。
The second language is a macro language for performing textual substitution. 第二种语言是宏语言，用来进行文字的转换。
adj.代理的；代用的；取代的
adj.代理的；取代的；代用的
