a heart insusceptible to pity的用法和样例：
- My new neighbor, whom I introduced to you the other day, had a heart attack last night.
- The doctor alerted me to the danger of a heart attack.
- That man was inaccessible to pity.
- Jane was down with a heart attack and was immediately sent to hospital.
- The father decided to have a heart to heart talk with his son about smoking.