a confirmed invalid的用法和样例：
- My mother, Jane Lampton Clements, died in her 88th year, a mighty age for one who at 40 was so delicate of body as to be accounted a confirmed invalid destined to pass soon away.
- a confirmed bachelor; a confirmed invalid.
- He'll never get married; he's a confirmed bachelor.
- We have opened a confirmed credit in your favour.
- We nave opened a confirmed credit in your favour.