m-out-of n code的用法和样例：
- m out of n code
- I can't go swimming now; I'm out of condition.
- I used to be good at cricket, but now I'm out of practice.
- When they start talking about economics, I'm out of my depth.
- I would like to go back to teaching but I'm out of touch with my subject now.
- Don't ask me to speak French! I'm out of practice.