She's 'in training' to be an astronaut. [=she is being trained to be an astronaut]
a 'training manual' [=a book of instructions for a job or task]
She owes her flexibility to her early 'training' as a dancer.
(..) for you to test yourself... ...is to try and remember how you arrived at this hotel. Can you do that? Yeah, I... COBB: No, breathe, breathe. Remember your training. Accept the fact that you're in a dream, and I'm here to protect you. Go on. Mm-hm. - You're not real? - No. (..)2010 Inception
(..) And a face full of glass hurts like hell. When you're in it, it feels real. ARTHUR: That's why the military developed dream sharing. It was a training program for soldiers to shoot, stab and strangle each other... ...and then wake up. ARIADNE: How did architects become involved? (..)2010 Inception