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]
(..) than his feeble attempt to protect you. And let's continue. Beautiful. Very visually dynamic. I chose my stage well. It's too bad he didn't have the strength to turn you. Instead, he kept you this fragile little human. It's cruel, really. Tell Edward how much it hurts. (..)2008 Twilight
(..) Is there something wrong with me? See, I tell you I can read minds, and you think there's something wrong with you. What is it? I don't have the strength to stay away from you anymore. Then don't. Okay, I think I'm warm enough now. Your hand is so cold. What is going on? (..)2008 Twilight