a vow of celibacy的用法和样例：
- Catholic priests take a vow of celibacy.
- People in some religious orders take a vow of celibacy.
- The illegitimate daughter of an ecclesiastic who has taken a vow of celibacy.
- The illegitimate son of an ecclesiastic who has taken a vow of celibacy.
- A vow of celibacy and the relinquishment of all personal assets hardly seemed a sacrifice.