没有形容词形式
prevention
n.预防；防范；防止
网络阻止；妨碍；预防措施
复数：preventions
例句：
1.
If somebody made the breakthrough that led to the prevention of breast cancer, it would win a Nobel Prize, she said.
她说，只要有人在乳房癌预防方面取得突破，他肯定能得诺贝尔奖。
2.
Current drug prevention of PEP is not satisfactory, and there has not been a single drug which can effectively prevent PEP.
药物预防PEP的现状不容乐观，目前尚无一种药物可有效预防PEP
