His special ability has been known since he was young.
Most people who have played with me know my ability and what I've done.
The ability of light to apply pressure to objects has been known for some time.
"I consider it important that my key officers know each other's abilities."
I just took advantage of him not knowing my stealing ability.
Those who do not know their ability will fall to the power of the bull.
Tom's ability as an inventor had, by this time, become well known.
The people in the city know a wizard's abilities and power by his dress.
After some time, people began to know about the helpless child's "abilities".
The cat's ability to twist around while falling and land on its feet is well known.