a painful experience的用法和样例：
- It was a painful experience nursing Father through his last illness.
- The funeral was a painful experience.
- My favorite quotation is the sentence above, written by Disraeli. It has helped through many a painful experience.
- For existing in a form that is diseased is a painful experience and one that soul did not enjoy.
- And indeed it was a painful experience, not only for the Red Race, but for all species upon Earth including Buffalo, for we are all ONE.