They say an aspirin is no substitute for treatment.

VOA: special.2009.10.20

"But when you're trying to deal with processes and technical terms on the aircraft, there's no substitute for speaking the same language."

VOA: standard.2009.12.13

And people are gonna have to learn about sablefish - which is a beautiful substitute for it, but yet it's not commonly known."

VOA: standard.2010.07.14