a sore subject的用法和样例：
- His son's marriage is a sore subject with him.
- His origins were a sore subject with him.
- Stalin agreed that this was undoubtedly a sore subject.
- EL SEGUNDO -- It is a sore subject when the Lakers are reminded about their recent history against lower-tier teams.
- I feel shivery and I have gotten a sore throat.
- I was off work because of a sore throat.