The meaning of buff that we do know about is one that describes a person.

VOA: special.2009.05.17

As much as I don't look forward to it, I do know that I'm going to have to."

VOA: standard.2010.03.18

"What we do know is that the airline left last night for Tripoli.

VOA: standard.2010.05.12

"We do know that your friend, Senator George Mitchell, who,of course, played such a valuable role in Northern Ireland, has applied himself diligently and with great attention to detail."

VOA: standard.2010.03.16

"We think that they may be. We do know that people who are taken out of high tobacco smoke environments have a definite drop in developing coronary artery disease.

VOA: standard.2010.03.04

"We do know that al-Qaida has nuclear ambitions,"

VOA: standard.2009.05.01

He says finding that out will be crucial. "Whether this was an act of terrorism conducted by al-Qaida central or that of a lone wolf acting independently, we will have to wait and see for the investigation and what comes out of that, but we do know that al-Qaida and their affiliates have a crazed obsession in targeting the aviation industry,"

VOA: standard.2009.12.27

I do not know what else to do but make the best of a bad deal and shake hands over it."

VOA: special.2009.06.27

"Aylmer," said Georgiana, "I do not know what the cost would be to both of us to remove this birthmark.

VOA: special.2009.09.26

Let us say I want to sell my car but I do not know exactly how much it is worth.

VOA: special.2009.04.12

"Vice President Lyndon Johnson has left the hospital in Dallas, but we do not know to where he has proceeded.

VOA: special.2009.08.16

why,when we do not sleep, we do not function well. We just do not know much about sleep at all."

VOA: special.2009.08.26

Many people who come to Las Vegas in hopes of winning lots of money do not know when to stop gambling.

VOA: special.2010.03.14

What I do is I always know who I am writing for, I always know the ensemble or the soloist.

VOA: special.2010.07.12