Now that the quarterback has recovered from his injury, this week the team will be functioning 'at full strength' again. [=the team will have all its players again]
We are negotiating from a 'position of strength'. [=from a strong position; from a position that gives us an advantage]
He didn't mean to knock you down; he just 'doesn't know his own strength'. [=doesn't realize how strong he really is]
(..) They key's run off. I helped build these cells. These are half-pin barrel hinges. With the right leverage and the proper application of strength. The door will lift free. What's your name? Will Turner. That would be short for William, I imagine. (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl