"Prevent" 是阻止的意思，来源于拉丁语 "praevenire"，意为"先于（事件）发生而采取行动"。
例句：
We must take steps to prevent the spread of the disease. (我们必须采取措施阻止疾病的传播。)
The company has implemented a new security protocol to prevent hacking. (公司已经实施了新的安全协议来防止黑客入侵。)
The seat belt is designed to prevent injuries in case of a crash. (安全带的设计是为了防止在车祸中受伤。)