The fact that they may not be accurate has been known for decades.

However, some experts believe that all the benefits and costs may not be known for decades.

The two men, who have known each other for decades, are no longer on speaking terms.

Smith referred to those relationships today, looking around the room at players he has known for a few years or decades.

Only someone who had known him for decades would have picked up on it.

You and I have known each other for decades.

Native Israelis tell her that they have not known this kind of fear for decades, she said.

But many of the athletes have known him for decades.

It has been known for decades that some kinds of obesity are worse than others.

It's been known for decades that adding more developers to a late project can make it later.